choose / choōz/ • v. (past chose / chōz/ ; past part. cho·sen / ˈchōzən/ ) [tr.] pick out or select (someone or something) as being the best or most appropriate of two or more alternatives: he chose a seat facing the door | [intr.] now it's my turn to choose. ∎ [intr.] decide on a course of action, typically after rejecting alternatives: I'll stay as long as I choose.DERIVATIVES: choos·er n.