From Longman Dictionary of Contemporary Englishfit in phrasal verb1RELATIONSHIPif someone fits in, they are accepted by the other people in a groupI never really fitted in at school. withI wasn’t sure if she would fit in with my friends.2fit something/somebody ↔ inTIME/HAVE TIME to manage to do something or see someone, even though you have a lot of other things to do syn squeeze something/somebody ↔ inThe doctor said he can fit me in at 4:30.I wanted to fit in a swim before breakfast.3TIME/HAVE TIMEif something fits in with other things, it is similar to them or goes well with themI don’t know quite how this new course will fit in. withA new building must fit in with its surroundings.You can’t expect a baby to fit in with your existing routine. →fit→ See Verb table
Examples from the Corpus
fit in• Can you fit in another person in the back seat?fit with• He would scythe her down if she didn't fit in with his plans.• The takeoverbidfit in with Merrill's strategy of expansion.• Lonnie doesn't seem to fit in with the other children.• If an Assembly were given tax-raising powers, how would that fit in with the other fiscalarrangements?• Many areas have specialschemes which fit in with the particular needs of individual people at home.• The system is flexible and fits in with the user's way of working.• It fitted in with what I had been working out already.• Do the hoursfit in with your existingcommitments?• How will a locationfit in with your leisureinterests?• It's obvious that having a girlfriend just doesn't fit in with your plans.• We'd like to go out for a meal on Thursday evening - does that fit in with your plans?fit with• He would scythe her down if she didn't fit in with his plans.• If an Assembly were given tax-raising powers, how would that fit in with the other fiscal arrangements?• Many areas have special schemes which fit in with the particular needs of individual people at home.• The system is flexible and fits in with the user's way of working.• It fitted in with what I had been working out already.• Do the hours fit in with your existing commitments?• How will a location fit in with your leisure interests?