Definitions from Wiktionary ( )

▸ adjective:  Indicating position or direction.
▸ adjective:  Situated toward or at the rear of something.
▸ adjective:  Acting or moving in the direction opposite to that in which someone or something is facing.
▸ adjective:  Acting or moving in the direction opposite to the usual direction of movement.
▸ adjective:  (figuratively) Acting or moving oppositely to the desired direction of progress.
▸ adjective:  Reversed in order or sequence.
▸ adjective:  (figuratively) Expressing lack of development or advancement.
▸ adjective:  Retarded in development; not as advanced as would be expected.
▸ adjective:  Of a culture, country, practice etc., undeveloped or unsophisticated.
▸ adjective:  Slow to apprehend; having difficulties in learning.
▸ adjective:  Lacking progressive or enlightened thought; outdated.
▸ adjective:  Late or behindhand.
▸ adjective:  (often in negative constructions) Reluctant or unwilling to advance or act; shy.
▸ adjective:  (chess) Of a pawn, further behind than pawns of the same colour on adjacent files and unable to be moved forward safely.
▸ adjective:  (cricket) On that part of the field behind the batsman's popping crease.
▸ adjective:  (cricket) Further behind the batsman's popping crease than something else.
▸ adjective:  (obsolete) Unwilling; averse; reluctant.
▸ adjective:  (obsolete) Already past or gone; bygone.
▸ adverb:  At, near or towards the rear of something.
▸ adverb:  In a direction opposite to that in which someone or something is facing or normally pointing.
▸ adverb:  In a direction opposite to the usual direction of movement.
▸ adverb:  (figuratively) Oppositely to the desired direction of progress, or from a better to a worse state.
▸ adverb:  In a reversed orientation; back to front.
▸ adverb:  In a reversed order or sequence.
▸ adverb:  Toward or into the past.
▸ adverb:  (obsolete) In the past.
▸ adverb:  By way of reflection; reflexively.
▸ noun:  The state behind or past.

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