Fib
//fɪb// noun, verb, slang
noun, verb, slang ·Common ·High school level
Definitions
Noun
- 1 A lie, especially one that is more or less inconsequential. informal
"Aſk me no queſtions, and I'll tell you no fibs."
- 2 The fibula. informal
- 3 A kind of experimental poem where the number of syllables in each line is the next succeeding Fibonacci number. neologism
- 4 Initialism of focused ion beam. abbreviation, alt-of, initialism
- 5 a trivial lie wordnet
Show 3 more definitions
- 6 A liar. informal, rare
""Oh! you dreadful fib," said Flora."
- 7 Initialism of fucking Illinois bastard. abbreviation, alt-of, derogatory, initialism, offensive
- 8 Initialism of flying inflatable boat. abbreviation, alt-of, initialism
Verb
- 1 To lie, especially more or less inconsequentially. informal, intransitive
- 2 To punch, especially a series of punches in rapid succession; to beat; to hit; to strike. archaic
"Fib the cove's quarron in the rumpad for the lour in his bung; beat the fellow in the highway for the money in his purse."
- 3 tell a relatively insignificant lie wordnet
Example
More examples"To call that fabrication a fib would be a criminal understatement."
Etymology
Etymology 1
Unknown. Probably from fable; compare fibble-fable (“nonsense”).
Etymology 2
Clipping of fibula.
Etymology 3
Short for Fibonacci.
Related phrases
More for "fib"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.