不用 1.(沒有必要) need not 不用客氣 don't mention it; don't stand on ceremony; 不用說 it goes without saying; needless to say; 不用著急。 you needn't worry.; there is no need to worry.2.(不使用) disuse; nonutility 這個(gè)詞已經(jīng)完全不用了。 the word has passed into complete disuse