1
general::
Phrase(s): fit in((to) something)
[for something] to be a suitable size to go into something. • This peg does not fit into this hole. • That huge sofa simply doesn’t fit in through the door., Phrase(s): fit someone or something in((to) something) [and] fit someone or something in
to manage to place someone or something into something. • I think I can fit you into my schedule. • I have fit in three people already today. • The shelf is tight, but I think I can fit one more book in., Phrase(s): fit in (with someone or something)
to be comfortable with someone or something; to be in accord or harmony with someone or something. • I really feel as if I fit in with that group of people. • It’s good that you fit in. • This chair doesn’t fit in with the style of furniture in my house., Phrase(s): fit in (somehow) (with something)
to match up or harmonize with something in some fashion. • Your itinerary fits in well with my plans. • This fits in very poorly with what I had planned.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
1. Also, fit into. Provide a place or time for. For example, We can't fit in another appointment? there's no time, or That tree won't fit into the hole you've dug. [Late 1600s] 2. fit in with. Be suited to, belong. For example, I just don't fit in with this group, or Her mood fitted in with the sad occasion.
American Heritage Idioms