How do you tell a real dictionary definition from a fake?

Real definitions are usually shorter, blander, and more boring than fakes. Lexicographers write to be precise, not interesting. Forgeries try too hard — they include vivid examples, surprising etymology, or 'narrative' details that real dictionaries omit. When in doubt, pick the most boring option.

What are the tells of LLM-written fake definitions?

Common LLM tells: parallel sentence structure across multiple definitions, overly polished prose, etymology that sounds plausible but is too narrative ('from the 14th century French poet who...'), and definitions that are 'helpful' rather than terse. Real dictionary entries are clinical.

Should I trust my gut on which definition sounds real?

Yes, but train it. The 'sounds real' instinct improves with exposure to real dictionary entries — Merriam-Webster, OED, Collins. Players who read dictionaries casually for 10 minutes a week get noticeably better at the game within a month.

What's the etymology heuristic?

Real word origins follow specific historical patterns: Latin roots tend to give precise technical definitions, Greek roots give scientific terms, Old English gives short concrete words. If a definition's etymology contradicts the word's apparent root structure, it's likely fake.

Is Liar's Dictionary the same as Balderdash?

Same mechanic. Balderdash is the boxed party-game version where players write fake definitions for each other. Liar's Dictionary is the online single-player version, with forged definitions pre-written. Both are descended from the older parlor game Fictionary.

Is there a free online Liar's Dictionary game?

Yes — Puzzle Cottage Liar's Dictionary is a free daily obscure-word game, no sign-up. New word and 5 definitions every day.

Liar's Dictionary Strategy — How to Spot the Real Definition

Q: What is the Liar's Dictionary game?

You're shown one obscure English word with five definitions. Four are forgeries written to sound plausible; only one is real, taken from a standard dictionary. Your job: pick the truth. The game is also known as Fictionary or Balderdash.

Liar’s Dictionary (also known as Fictionary or Balderdash) shows you an obscure English word with five definitions. Four are forgeries; only one is real. Your job: pick the truth. The naive approach — pick the one that “sounds right” — works about 30% of the time (slightly better than random 20%). With the heuristics in this guide, success rate jumps to 70%+.

The single best heuristic: pick the boring one

Real dictionary entries are written by lexicographers whose job is precision, not entertainment. They’re clinical, short, and bland. Forgeries try too hard — they include vivid examples, surprising backstories, or “narrative” etymology details. When in doubt: pick the most boring option.

Tells of forged definitions

Too narrative. “Originally used by 14th-century French poets to describe…” Real dictionaries don’t tell stories.
Overly precise dates or origins. Real etymologies say “Middle English” or “Latin”; fakes invent specific dates and locations.
Parallel structure across definitions. If five definitions all start with similar grammatical patterns, an LLM probably wrote them. Real definitions are individualized.
Helpful tone. Forgeries try to teach. Real definitions don’t.
Convenient connection to the word’s sound or appearance. If the definition seems “designed” to fit the word, it probably was.

Tells of real definitions

Short. Most real entries are under 20 words.
Boring. No flourish.
Specific to the word’s technical domain. Real obscure words are usually obscure because they’re technical — legal, biological, archaic. Definitions reflect that.
Sometimes anti-climactic. “A small bird native to…” — if it sounds like it could be filler text in a textbook, that’s a real-definition signal.

Real lexicographers don’t care if you’re entertained. The most boring definition usually wins.

The etymology heuristic

Real word origins follow specific historical patterns:

Latin roots tend to give precise technical definitions (anatomy, law, science).
Greek roots give scientific or philosophical terms.
Old English roots give short, concrete, everyday words.
French via Norman conquest gives words about food, court, fashion.

If a definition’s claimed etymology contradicts the word’s apparent root structure, it’s likely fake. A “Greek”-rooted word that’s defined as a medieval-French legal term is probably a forgery.

How to train your instinct

Read dictionary entries casually. 10 minutes a week of reading random Merriam-Webster or OED entries calibrates your “real-sounding” instinct. After a month, you’ll spot forgeries faster than you can articulate why.

Frequently asked questions

What is the Liar’s Dictionary game?

An obscure English word with five definitions. Four forgeries, one real. Pick the truth. Also known as Fictionary or Balderdash.

How do you tell real from fake?

Real definitions are short, bland, clinical. Forgeries try too hard. Pick the most boring option.

What are LLM-fake definition tells?

Parallel structure, polished prose, narrative etymology, “helpful” tone.

Should I trust my gut?

Yes, but train it by reading real dictionary entries.

Etymology heuristic?

Latin roots → technical, Greek → scientific, Old English → everyday, French → food/court/fashion. Mismatch between root and definition signals fake.

Same as Balderdash?

Same mechanic. Balderdash is the boxed party-game version. Both descend from Fictionary.

Free online version?

Yes — Puzzle Cottage Liar’s Dictionary, free, no sign-up.

Today’s Liar’s Dictionary

One word. Five definitions. Spot the real one.

Play now →

Liar’s Dictionary strategy — how to spot the real definition