to come, change, or grow to be (as specified)

He became tired.

to come into being.

to be attractive on; befit in appearance; look well on

That gown becomes you.

to be suitable or necessary to the dignity, situation, or responsibility of

conduct that becomes an officer.

become of

to happen to; be the fate of

What will become of him?

verb

alter to , assume form of , be converted to , be reduced to , be reformed , be remodeled , be transformed into , change into , come , come to be , convert , develop into , emerge as , eventually be , grow into , incline , mature , metamorphose , pass into , ripen into , shift , turn into , turn out , wax , accord , adorn , agree , augment , be appropriate , belong to , display , embellish , enrich , fit , flatter , garnish , go together , go with , grace , harmonize , heighten , make handsome , match , ornament , set off , suit , get , grow , turn , befit , behoove , conform , correspond , enhance , befall , betide , change , evolve , pass , rise