strong and healthy

acceptable from a particular viewpoint, e.g. of competence, morality, or qualifications; worthy

informal likely to; so as to be likely to

We walked till we were fit to drop

Brit, informal of a person: attractive

adapted or suited to an end or purpose

a fit punishment

adapted to the environment

survival of the fittest

acceptable from a particular viewpoint, e.g. of competence, morality, or qualifications; worthy

no fitter person for the task

in a suitable state

not fit to be seen

in an advanced condition of a state or feeling specified, so as to be about to suffer the extreme result specified

so tired I was fit to drop

strong and healthy

a good way of keeping fit

informal said of a person: attractive

to be the right size or shape for (somebody or something)

to be suitable for or appropriate to (something)

Make the punishment fit the crime

to match or correspond to (something)

a theory that fits all the facts

to render (somebody or something) suitable for a task, purpose, etc

She had qualities that especially fitted her for leadership

(often + in) to adjust or adapt (something) in response to needs

I can fit my plans in with yours

(often + into) to find time for (something) in the time available

You can't fit any more activities into the day

to supply (something) with equipment, etc

to adjust (a curve of a specified type) to a given set of points, e.g. to demonstrate a mathematical or esp statistical relationship

archaic to be seemly or proper for (somebody) to do something; = behove

It fits us then to be as provident as fear may teach us — Shakespeare

to be the right size or shape for somebody or something

said of parts or components: to go together in a certain relationship

These two parts fit together

One fits inside the other

to be in accordance with the facts or circumstances

It all fits

the manner in which something fits, e.g. a piece of clothing, or things fit together fits the wearer

a snug fit

the degree of closeness with which surfaces are brought together in an assembly of parts

the conformity between an experimental result and theoretical expectation or between data and an approximating curve

a sudden violent attack of a disease, e.g. epilepsy, esp when accompanied by convulsions or unconsciousness

a spell or attack of something difficult to control

a coughing fit

a fit of giggles

In a fit of frustration he had attacked his computer with a hammer

a sudden outburst of a specified activity

a fit of letter-writing