At the back of some person or thing; in the rear: opposed to before.Toward the back part; backward: as, to look behind.Out of sight; not produced or exhibited to view; in abeyance or reserve.Remaining after some occurrence, action, or operation: as, he departed and left us behind.Past in the progress of time.In arrear; behindhand: as, he is behind in his rent.At the back or in the rear of, as regards either the actual or the assumed front: the opposite of before: as, the valet stood behind his master; crouching behind a tree.Figuratively, in a position or at a point not so far advanced as; in the rear of, as regards progress, knowledge, development, etc.; not on an equality with: as, behind the age; he is behind the others in mathematics.In existence or remaining after the removal or disappearance of: as, he left a large family behind him.Synonyms Behind, After. Behind relates primarily to position; after, to time. When after notes position, it is less close or exact than behind, and it means position in motion. To say that men stood one after another in a line was once correct (see Chaucer, knight's Tale, 1. 901, “kneeled … each after other”), but is not so now. They may come one after another, that is, somewhat irregularly and apart; they came one behind another, that is, close together, one covering another. The distinction is similar to that between beneath and below.