But  —conj. 1 a nevertheless, however (tried but failed). B on the other hand; on the contrary (i am old but you are young). 2 except, otherwise than (cannot choose but do it; what could we do but run?). 3 without the result that (it never rains but it pours). —prep. Except; apart from; other than (all cried but me; nothing but trouble). —adv. 1 only; no more than; only just (we can but try; is but a child; had but arrived). 2 in emphatic repetition; definitely (would see nobody, but nobody). —rel. Pron. Who not; that not (not a man but feels pity). —n. Objection (ifs and buts).  but for without the help or hindrance etc. Of (but for you i'd be rich). But one (or two etc.) Excluding one (or two etc.) From the number (next door but one; last but one). But then however (i won, but then i am older). [old english]