fit 1 (fĭt)
v. fit·ted or fit, fit·ted, fit·ting, fits
a. To be the proper size and shape for: These shoes fit me.
b. To cause to be the proper size and shape: The tailor fitted the trousers by shortening them.
c. To measure for proper size: She fitted me for a new jacket.
2. To be appropriate to; suit: music that fits your mood.
3. To be in conformity or agreement with: observations that fit the theory nicely.
4. To make suitable; adapt: fitted the shelves for large books. See Synonyms at adapt.
5. To make ready; prepare: Specialized training fitted her for the job.
6. To equip; outfit: fit out a ship.
7. To provide a place or time for: You can't fit any more toys in the box. The doctor can fit you in today.
8. To insert or adjust so as to be properly in place: fit a handle on a door.
1. To be the proper size and shape.
2. To be suited; belong: doesn't fit in with these people.
3. To be in harmony; agree: His good mood fit in with the joyful occasion.
adj. fit·ter, fit·test
1. Suited, adapted, or acceptable for a given circumstance or purpose: not a fit time for flippancy.
2. Appropriate; proper: Do as you see fit.
3. Physically sound; healthy: keeps fit with diet and exercise.
4. Biology Able to survive and produce viable offspring in a particular environment
1. The state, quality, or way of being fitted: the proper fit of means to ends.
2. The manner in which clothing fits: a jacket with a tight fit.
3. The degree of precision with which surfaces are adjusted or adapted to each other in a machine or collection of parts.
fit to be tied
Roused to great anger or indignation; outraged.
fit to kill Slang
To an extreme or elaborate degree: dressed up fit to kill.
[Middle English fitten, to be suitable, marshal troops.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.