Of motion or direction: Back: in the opposite direction; to or toward a former or the original position; to the same place or person: often strengthened with back.Of action: Back; in return; in reply, response, answer, echo.Of action or fact as related to time, or of time simply: Once more; in addition; another time; anew: marking repetitionOf action or existence: as, to do anything again; he had to make it all over again.Of number or quantity: only in the phrases as much or as many again (= twice as much or as many), half as much again (= once and a half as much), etc.Of kind or character: marking resemblance.Of succession of thought: Once more; in continuation; in an additional case or instance; moreover; besides (marking transition); on the other hand (marking contrast).Against.Against the time that: like against, conj.