- 1 to find time to see somebody or to do something I'll try and fit you in after lunch. I had to fit ten appointments into one morning.
- 2 to find or have enough space for somebody/something in a place We can't fit in any more chairs.
to live, work, etc. in an easy and natural way with somebody/something He's never done this type of work before; I'm not sure how he'll fit in with the other people. Where do I fit in? Do these plans fit in with your arrangements?