| Against 1. (prep.) Abreast; opposite to; facing; towards; as, against the mouth of a river; -- in this sense often preceded by over. 2. (prep.) From an opposite direction so as to strike or come in contact with; in contact with; upon; as, hail beats against the roof. 3. (prep.) In opposition to, whether the opposition is of sentiment or of action; on the other side; counter to; in contrariety to; hence, adverse to; as, against reason; against law; to run a race against time. 4. (prep.) By of before the time that; in preparation for; so as to be ready for the time when. Thesaurus Entries about, across, adverse to, as to, at cross-purposes with, athwart, con, concerning, confronting, contra, contrary to, counter to, dead against, despite, en route to, facing, for, fronting, headed for, in conflict with, in contact with, in contempt of, in defiance of, in disagreement with, in front of, in opposition to, in order to, in passage to, in preparation for, in spite of, in transit to, next to, on, on route to, opposed to, opposite, opposite to, over against, re, regardless of, respecting, to, touching, toward, towards, up, up against, upon, versus, vis-a-vis, with respect to |