fit the bill
To satisfy a need; to serve a purpose; to fulfill specified requirements.
Near-synonym: make the grade
adj
Suitable; proper
You have nothing to say about it. I'll do exactly as I see fit.
Is it fit to say a king, Thou art wicked?
Adapted to a purpose or environment.
survival of the fittest
That which ordinary men are fit for, I am qualified in.
In good shape; physically well.
You don't have to be a good climber for Kilimanjaro, but you do have to be fit.
Sexually attractive; good-looking; fanciable.
I think the girl working in the office is fit.
Got my hands down her jeans and I nearly lost half my arm / But after ten pints, she looked quite fit
Prepared; ready.
So fit to shoot, she singled forth among her foes who first her quarry's strength should feel.
verb
To be suitable for.
It fits the purpose.
The speaker should be certain that his subject fits the occasion.
To have sufficient space available at some location to be able to be there.
Ten clowns fit in the car, but not a hundred.
The elevator can fit up to 10 people.
To conform to in size and shape.
The small shirt doesn't fit me, so I'll buy the medium size.
If I lose a few kilos, the gorgeous wedding dress might fit me.
To be of the right size and shape
I know the pieces fit / 'Cause I watched them fall away
Even though in a way you let him freeze to death in the water, because the way I see it... / I agree. Y'know, I think he actually could have fitted on that bit of door. / There was plenty of room on the raft. / I know. I know, I know.
To make conform in size and shape.
I want to fit the drapes to the windows.
noun
The degree to which something fits.
This shirt is a bad fit.
Since he put on weight, his jeans have been a tight fit.
Conformity of elements one to another.
It's hard to get a good fit using second-hand parts.
The part of an object upon which anything fits tightly.
Measure of how well a particular commercial execution captures the character or values of a brand.
The Wonder Bread advertising research results showed the “White Picket Fence” commercial had strong fit ratings.
Goodness of fit.