1.
If you manage to fit a person or task in , you manage to find time to deal with them.
We work long hours both outside and inside the home and we rush around trying to fit everything in...
I find that I just can’t fit in regular domestic work.
PHRASAL VERB : V n P , V P n (not pron)
2.
If you fit in as part of a group, you seem to belong there because you are similar to the other people in it.
She was great with the children and fitted in beautifully.
PHRASAL VERB : V P
3.
If you say that someone or something fits in , you understand how they form part of a particular situation or system.
He knew where I fitted in and what he had to do to get the best out of me...
This fits in with what you’ve told me.
PHRASAL VERB : V P , V P with n