buy into Synonyms

accede be completely convinced be absolutely convinced be absolutely certain be absolutely sure be of the same mind side with come to terms agree with be completely sure accept as true buy a stake in buy shares in give blessing clinch the deal give carte blanche give green light put money into provide capital for go along with fall for back approve allow agree acquiesce acknowledge accredit accept buy concur buy in see eye to eye pass on support permit invest fund endorse take a stake in