What does fit mean?
Few English words work as hard as 'fit'. As a verb, it describes being the correct size or shape — clothes that fit neither pinch nor sag — and extends metaphorically to suitability: a candidate who fits the role, or data that fits the model. It also covers installation, as when a kitchen is fitted with new units. As an adjective, 'fit' signals physical health and readiness, from keeping fit at the gym to being fit for duty, though in Britain and Australia it informally also means attractive. As a noun, a 'fit' is a sudden seizure or convulsion, or a burst of emotion like a fit of giggles. The word's flexibility makes it indispensable: it moves effortlessly between the physical, the practical, and the emotional. Its regional grammar quirks — 'fitted' versus 'fit' as past tense — even offer a neat marker of whether a writer leans British or American.
To be of the right size or shape; to be suitable for a role or purpose.
"This jacket doesn't fit me anymore."
Past tense is 'fitted' in British English but often simply 'fit' in American English.
A sudden attack or outburst, especially of a medical condition or strong emotion.
"She burst into a fit of laughter at his joke."
Physically healthy and in good condition; suitable or appropriate for a given purpose.
"He stays fit by running five kilometres every morning."
In British and Australian informal speech, 'fit' additionally means physically attractive.
Standard plural of the noun sense; used especially in phrases like 'fits and starts'.
"He wrote the novel by fits and starts over several years."
In American English you 'fit' into your jeans yesterday, but in British English you 'fitted' into them — same word, two grammatical personalities divided by an ocean.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of fit
The verb 'fit' meaning 'to be suitable' is first recorded in English in the late sixteenth century, likely arising from an earlier sense of the word meaning 'suited or adapted'. Its ultimate origin is uncertain, possibly connected to Old English terms for a footed or measured portion, though scholars have not settled this definitively. The noun sense referring to a sudden seizure dates to the Middle Ages and may derive from a separate Old English root related to 'foh', meaning hostile or quarrelsome — giving us both 'fit of anger' and the medical 'fit'. The adjective 'fit' meaning 'healthy' developed much later, becoming widespread in the nineteenth century alongside modern ideas of exercise.
Related word forms
How fit is actually used
'Fit' is highly polysemous: its verb sense is universal across English-speaking regions, but the adjective meaning 'attractive' is chiefly British and Australian informal usage. Past tense varies regionally — American English commonly uses 'fit' ('it fit'), while British English prefers 'fitted'. The medical sense (a fit/epileptic seizure) is somewhat dated in polite clinical language, where 'seizure' is preferred, though 'fit' remains common colloquially.
Easily confused with fit
'Fit' can be either present tense or past tense, but British English strongly prefers 'fitted' as the past tense of fitting something, while American English often uses 'fit' itself as past tense.