1733, "comfortable," from well (adv.) + off. Meaning "prosperous, not poor" is recorded from 1849.

also tradeoff, "sacrifice of one benefit for another," 1959, from verbal phrase to trade off; see trade (v.) + off (adv.).

"used, meant to be used, or taking place away from roads," 1949, from off- (adj.) (see off (prep.)) + road.

"act of pushing off" (a boat, from the land), 1902, from the verbal phrase; see push (v.) + off (adv.).

1901 in reference to information, from tip (v.2) + off (adv.). From 1924 in basketball, from tip (v.3).

also faceoff, 1886 in sports (hockey, etc., originally lacrosse), from verbal phrase in a sports sense, attested from 1867 (see face (v.) + off (adv.)); the off perhaps is based on stand-off or similar constructions.

"removable by lifting," 1907, from the verbal phrase, from lift (v.) + off (adv.)

1858, "defective or inferior because not of a natural or proper color," from off (prep.) + color (n.); originally used of gems; figurative extension to "not of the proper character, of questionable taste, risqué" is American English, 1867.

by 1911, of music or singing, "not having the correct tone or pitch, out of tune," from off (prep.) + musical sense of key (n.1). Figurative sense "not in accordance with what is appropriate in the circumstances" is by 1943.

"retreat, stop annoying someone," by 1938, from the verbal phrase, from back (v.) + off (adv.).