The word for fitting in with a group is "integrate." It refers to the process of becoming part of a larger whole, adapting to the norms and values of the group. Another term that can be used is "assimilate," which implies adopting the characteristics of the group to blend in more seamlessly.
to fit in to a group
puma
tyrantism
Fit is the correct spelling for the word fit.
"Inquire" would be the best fit.
the drug fit in narcotics
belong
2nd group or group of alkali earth metals.
Healthy is another word for fit.
it fits into the meat group
pligireme
Fish is it's own group.