A Massive Job Jargon Glossary For Writers

You want a reader to pick up your screenplay and lean into a world they feel is well-researched and one they want to live in.

The best way to do that is to have characters who speak in the dialect of their trade and their world.

That requires the writer to sit down and really look into these worlds or talk to people in them. I wanted to give you a leg up by creating a glossary of terms you can use, based on the words in your story, to sharpen your dialogue, deepen character backgrounds, and give your prose the texture of real-world expertise.

Let's dive in.

Nautical & Maritime

• Abaft: Toward the stern or behind the vessel (e.g., "abaft the beam").
• Bilge: The lowest inner part of a ship's hull where water naturally collects and settles.
• Bitts: Heavy wooden or metal posts on the deck used for securing mooring lines and cables.
• Bowsprit: A strong spar projecting forward from the stem of a ship, used to extend the sail area.
• Careen: To lay a ship over on its side on a beach for cleaning, scraping, or repairing the hull.
• Derrick: A specialized crane with a movable boom used aboard ships for hoisting heavy cargo.
• Dogwatch: Shortened two-hour shifts (usually 4–6 PM or 6–8 PM) are used to rotate shift schedules so sailors don't work the same hours every night.
• Futtock: A curved timber forming one of the intermediate, interlocking pieces of a ship's frame.
• Futtock Shrouds: Iron ropes or rods connecting the lower rigging to a platform higher up the mast.
• Garboard: The lowest plank on a ship’s hull, laid adjacent to the keel.
• Hawsehole: A hole in the bow of a ship through which an anchor cable or mooring line passes.
• Heave To: To bring a sailing vessel to a complete stop by adjusting the sails and rudder so they counteract one another.
• Jibe: To swing a fore-and-aft sail from one side of the vessel to the other while sailing away from the wind.
• Keelhaul: A harsh historic naval punishment in which a sailor was dragged through the water underneath the ship's hull from one side to the other.
• Lee Shore: A shore lying downwind of a ship; dangerously hazardous because the wind actively pushes the vessel toward land.
• Painter: A short length of rope secured to the bow of a small boat, used for tying it off to a dock or towing ship.
• Plimsol Line: A reference mark painted on a ship's hull indicating the maximum depth to which it may be legally loaded under different conditions.
• Sounding: Measuring the depth of water beneath a vessel using a weighted line or modern echo system.
• Starboard: The right-hand side of a vessel when facing forward toward the bow (opposite of port).
• Wayward: A vessel drifting out of control without motive power or active steering.
• Windward: The direction from which the wind is blowing; upwind (the opposite of leeward).

Legal & Jurisprudential

• Affidavit: A written statement confirmed by oath or affirmation for use as evidence in court proceedings.
• Amicus Curiae: "Friend of the court." A neutral third party permitted to submit a brief offering relevant information or expertise.
• Barratry: Fraudulent, illegal, or reckless misconduct by a ship’s master or crew that harms the owner or charterer; it also refers to repeatedly stirring up groundless lawsuits.
• Bona Fide: Made or carried out in good faith, without fraud or deceit.
• Certiorari: A higher court's order agreeing to review a lower court’s decision.
• Embezzlement: Fraudulent misappropriation of assets or funds entrusted to an individual's care.
• Estoppel: A legal bar that prevents someone from asserting a claim or right that contradicts their previous statements or actions.
• Exculpatory: Evidence that tends to clear a defendant of guilt or blame.
• Habeas Corpus: A legal order requiring a detained person to be brought before a judge to determine the legality of their imprisonment.
• Inchoate: A crime or act that has been initiated, attempted, or planned, but not fully completed (e.g., conspiracy or solicitation).
• Injunction: A judicial order restraining a party from taking or continuing a specific course of action.
• Laches: An unreasonable delay in bringing a legal claim that prejudices the opposing party, forfeiting the right to relief.
• Malfeasance: An intentional, illegal act performed by a public official or fiduciary.
• Perjury: The willful act of swearing a false oath or giving false testimony under oath.
• Prima Facie: Evidence that appears sufficient on its face to establish a fact unless rebutted by contrary proof.
• Replevin: A lawsuit brought to recover possession of unlawfully taken personal property rather than monetary damages.
• Subpoena: A formal writ ordering a person to attend court and offer testimony or produce documents.
• Tort: A civil wrong that unfairly causes someone else to suffer loss or harm, resulting in legal liability.
• Tortfeasor: An individual or entity that commits a civil wrong (tort) causing injury or harm to another.
• Voir Dire: The preliminary examination of potential jurors or witnesses to determine their competence or suitability.

Medical & Anatomical

• Aneurysm: An abnormal, balloon-like bulge in the wall of an artery that risks rupturing.
• Avulsion: The violent tearing away or forcible separation of a body part or tissue structure.
• Bruit: An abnormal sound or murmur heard through a stethoscope, indicating turbulent blood flow through a narrowed vessel.
• Catheter: A thin, flexible tube inserted into a body cavity, duct, or vessel to drain or inject fluids.
• Crepitus: A grating, crackling, or popping sound/sensation produced by friction between bone fragments or air trapped under the skin.
• Debridement: The surgical removal of dead, damaged, or infected tissue to improve the healing potential of remaining healthy tissue.
• Dyspnea: Severe, labored, or painful breathing; shortness of breath.
• Edema: Swelling caused by excess fluid trapped in the body's tissues.
• Exsanguination: Death or extreme weakness resulting from severe, rapid loss of blood.
• Hematoma: A localized collection of blood outside the blood vessels, usually caused by trauma.
• Iatrogenic: An illness, injury, or adverse condition caused unintentionally by medical treatment or diagnostic procedures.
• Idiopathic: A disease or symptom arising spontaneously from an unknown or obscure cause.
• Ischemia: An inadequate blood supply to an organ or part of the body, causing tissue distress or damage.
• Necrosis: The premature death of cells or living tissue caused by disease, trauma, or lack of blood flow.
• Palpation: Examining the body using hands and fingers to feel organs, masses, or tender areas.
• Petechiae: Tiny, pinpoint red or purple spots on the skin caused by minor hemorrhaging from broken capillaries.
• Sepsis: A life-threatening systemic reaction to an infection that causes organ damage and failure.
• Stricture: An abnormal narrowing of a tubular body passage, such as an esophagus or blood vessel.
• Triage: The process of prioritizing patient treatment based on the severity of their condition.
• Vascular: Relating to, affecting, or consisting of vessels that conduct fluid like blood or lymph.

Tactical, Military & Firearm

• Berm: A raised earthen bank or barrier used to absorb gunfire or block line of sight.
• Bore: The interior diameter of a firearm barrel through which the projectile travels.
• Collateral Damage: Unintended civilian casualties or property destruction resulting from military operations.
• Cook-Off: The premature detonation of ammunition caused by heat buildup inside a hot gun chamber.
• Defilade: Utilizing natural terrain or artificial cover to protect troops and positions from enemy direct fire and observation.
• Enfilade: A tactical position allowing weapons fire to sweep down the entire length of an enemy’s formation or trench.
• Flank: The vulnerable far-left or far-right side of a military unit or battlefield formation.
• Gunsight Picture: The visual alignment of the shooter’s eye, front sight, rear sight, and target.
• Milling: Uncontrolled, chaotic movement of a panicked unit or crowd within a confined space.
• Muzzle Drift: The natural upward or sideways movement of a firearm's barrel caused by recoil during sustained firing.
• Muzzle Velocity: The speed at which a projectile exits the barrel of a weapon.
• Obstacle Belt: A designated, coordinated zone of terrain reinforced with wire, mines, or barriers to channel or block enemy movement.
• Overwatch: A supportive tactical element covering a moving friendly unit from a stationary, dominant vantage point.
• Pincer Movement: A double-envelopment tactic where friendly forces attack both flanks of an enemy force simultaneously.
• Retrograde: An organized, tactical retreat or movement away from the enemy.
• Rifling: Spiral grooves cut inside a barrel that impart spin to a bullet, enhancing flight stability and accuracy.
• Salient: A bulge or projection of a battle line that extends deep into enemy-held territory, leaving it vulnerable to being surrounded.
• Squeezebore: A barrel designed with a tapering bore diameter that accelerates custom-built projectiles to extremely high velocities.
• Suppressor: A device attached to the muzzle of a firearm to reduce visible flash and audible noise during firing.
• Zeroing: The process of aligning a weapon's sights so the bullet hits where the sight crosshairs aim at a specific distance.

Blacksmithing, Metallurgy & Weaponry

• Anneal: Heating metal to a specific temperature and allowing it to cool slowly to relieve internal stress and soften it for working.
• Anvil: A heavy iron block upon which hot metals are hammered and shaped.
• Blast Furnace: An industrial structure where iron ore is smelted using forced high-temperature air currents.
• Brazing: Joining two metal pieces together by melting a filler metal with a lower melting point into the joint.
• Crucible: A ceramic or metallic vessel used to melt substances at extremely high temperatures.
• Forge: A specialized hearth or furnace used by smiths to heat metals to workable temperatures.
• Fuller: A longitudinal groove forged into the flat side of a blade to lighten the weapon without sacrificing structural integrity.
• Pummel/Pommel: The weighted knob at the base of a sword hilt designed to balance the weight of the blade.
• Quenching: Rapidly cooling hot metal in water, oil, or air to harden the material.
• Quillon: The individual side arms forming the crossguard of a sword.
• Riveting: Securing metal plates or parts using a short metal pin passed through aligning holes and flattened at the ends.
• Slag: A stony, glass-like waste byproduct left behind after ore has been smelted and separated from metal.
• Smelting: Heating raw ore to extract a base metal from impurities.
• Swage: A shaped iron block or tool used by blacksmiths to mold hot metal into specific cross-sections or profiles.
• Temper: Reheating quenched, hardened steel to a specific lower temperature to reduce brittleness and increase toughness.
• Tuyere: A nozzle or pipe through which air is blown into a forge or furnace to increase heat.
• Wootz: A historic crucible steel characterized by high carbon content and distinctive wavy pattern lines.

Black Market, Criminal & Underworld

• Bagman: An agent who collects or distributes bribe money, extortion funds, or illegal profits for a syndicate.
• Cleaner: A specialist hired to scrub a crime scene of forensic evidence, blood, and physical traces.
• Drop: A secret predetermined location where illicit goods, cash, or messages are hidden for exchange.
• Fence: An intermediary who knowingly purchases stolen goods from thieves to resell them to unsuspecting buyers.
• Fixer: An influential operative skilled at solving complex problems, bribing officials, or covering up scandals.
• Kite: An unauthorized or illegal check written against insufficient funds to exploit bank clearing times; in prison jargon, a smuggled note.
• Launder: Process illicitly obtained money through legitimate businesses or complex transfers to disguise its criminal origin.
• Lookout: A crew member stationed outside a heist area to watch for law enforcement or rivals and signal danger.
• Mule: An individual paid to physically smuggle contraband across borders or security checkpoints.
• Pinch: A sudden police raid or arrest.
• Plant: A planted spy, or an item placed strategically at a crime scene to frame a third party or distract investigators.
• Racket: A fraudulent, illegal, or extortionate scheme operated for ongoing profit.
• Safehouse: A secret, secure residential location used for hiding individuals from law enforcement or rivals.
• Shill: An accomplice who poses as an enthusiastic, independent customer to lure unsuspecting targets into a scam or rigged game.
• Squeal: Act as an informant or confess secrets to authorities regarding criminal accomplices.
• Underwriter: In organized criminal networks, the financier who bankrolls illicit operations upfront in exchange for a large cut of the profits.

Aviation & Aerospace

• Altithrust: Pushing engine output past baseline limits to maintain elevation in thin, low-pressure air.
• Angle of Attack: The precise angle between an aircraft wing's chord line and the oncoming airflow.
• Avionics: The collective electronics, navigation, communication, and display systems onboard an aircraft.
• Dead Reckoning: Calculating current position using a previously known position, estimated speed, and heading.
• Flaperon: A control surface that functions simultaneously as an aileron for roll control and a flap for lift.
• Ground Effect: Increased lift and reduced drag are created when an aircraft flies very close to the ground.
• Mach Line: The boundary of a shock wave formed by an object traveling at supersonic speeds.
• Pitot Tube: A pressure-sensitive instrument used to measure an aircraft's airspeed.
• Squawk: Setting a specific four-digit transponder code to transmit aircraft identity and status to air traffic control.
• Stall: A sudden reduction in lift caused when the angle of attack becomes too steep for airflow to stay attached to the wing.

Cybersecurity, Hacking & Tech

• Air-Gap: Physically isolating a computer network from external networks or the internet to prevent intrusion.
• Botnet: A network of compromised computers controlled remotely to launch mass cyberattacks.
• Brute Force: A trial-and-error attack method used to decode passwords or encryption keys through systematic attempts.
• Buffer Overflow: An exploit where extra data is deliberately written into memory buffers to overwrite adjacent memory.
• Payload: The specific part of malware code designed to execute malicious actions on a target system.
• Phishing: Social engineering attacks designed to trick users into revealing sensitive credentials via deceptive emails or links.
• Rootkit: A collection of stealthy software tools designed to grant administrator-level access while hiding its presence.
• Salting: Adding random data to a password before hashing it to protect against precomputed lookup tables.
• Spoofing: Faking headers, IP addresses, or identities to trick a network or user into trusting an unverified source.
• Zero-Day: A software security vulnerability unknown to the software developer.

Fintech, Banking & Wall Street

• Arbitrage: Simultaneously buying and selling an asset in different markets to profit from small price discrepancies.
• Bear Hug: An unsolicited acquisition offer made at a price high enough to pressure a company's board into accepting.
• Dark Pool: A private financial exchange that lets institutional investors trade large-volume blocks without publishing prices to the public market.
• Haircut: The percentage reduction applied to the value of an asset when used as collateral for a loan.
• Illiquid: An asset or security that cannot be quickly converted into cash without a significant loss in value.
• Margin Call: A broker's demand for an investor to deposit additional cash or securities to cover potential trading losses.
• Poison Pill: A defensive tactic used by corporations to prevent hostile takeovers by diluting share values for the acquirer.
• Quantitative Easing: A monetary policy in which central banks purchase long-term securities to inject liquidity directly into the economy.
• Short Squeeze: A rapid price surge that forces short sellers to buy back stock to cover positions, driving prices higher.
• Yield Curve: A graph showing interest rates on bonds across different maturity dates, used to gauge economic outlooks.

Culinary & Fine Dining

• Bain-Marie: A heated water bath used to gently cook delicate foods or keep sauces warm without burning.
• Chiffonade: A knife technique used to cut leafy greens and herbs into long, thin ribbons.
• Deglaze: Adding liquid to a hot pan to dissolve browned food residue stuck to the bottom, forming a sauce base.
• Emulsify: Combining two immiscible liquids (like oil and water) into a smooth, stable mixture.
• Mise en Place: Organizing and prepping all ingredients and tools before cooking begins.
• Nappe: The ideal consistency of a sauce when it evenly coats the back of a spoon without running off instantly.
• Proofing: Allowing yeast dough to rest and rise before baking.
• Roux: A cooked mixture of equal parts flour and fat used as a thickening agent for gravies and sauces.
• Sous-Vide: Vacuum-sealing food in a bag and cooking it to precise temperatures in a regulated water bath.
• Truss: Tying poultry or meat tightly with string to maintain a uniform shape during cooking.

Journalism & Publishing

• Advance: Money paid to an author upfront before a book's publication, deducted from future earned royalties.
• Beat: A reporter's assigned topic, industry, or geographic territory.
• Byline: A line at the top of an article giving the writer's name.
• Copyediting: Reviewing text for grammar, punctuation, style, and consistency before printing.
• Embargo: A request or agreement not to publish news or information until a specified time or date.
• Graf: A casual newsroom abbreviation for a paragraph.
• Lead (Lede): The introductory sentence or opening paragraph of a news story designed to capture reader attention.
• Proof: A trial printed version of a manuscript or layout generated for final error checking.
• Slush Pile: The stack of unsolicited manuscripts sent to publishers or literary agencies by unrepresented authors.
• Stringer: A freelance journalist or photographer hired to cover stories on a temporary, piece-rate basis.

Summing It All Up

This is basically a document to help you worldbuild and provide characterization. Make this stuff pop so people are totally consumed by your story, and it maintains believability.

Let me know what you think in the comments.