1776, "a display," from the verbal phrase, attested by 1793 as "make a conspicuous and obvious display;" see show (v.) + off (adv.). From 1801 as "a deliberate and ostentatious display;" in reference to the person who makes such a display, attested from 1924. The noun showing-off "ostentatious display" is from 1874.

"single example of a manufactured product," by 1927, from one + off. Later given figurative extension.

by 1895, from verbal phrase; see hand (n.) + off (adv.). Hands off! as a command to desist is by 1810.

1958, intransitive, "go away," chiefly British; the transitive meaning "annoy (someone)" is by 1968, chiefly U.S.; from piss (v.) + off (adv.). Pissed off "angry, fed up" is attested by 1946 (Partridge says 1937); said to have been used in the military in World War II; in common use from 1970s.

"sloping one-way road leading off a main highway," 1954, from off- (adj.), from off (prep.), + ramp (n.).

"initial burst of energy that launches a rocket into space," 1950, from the verbal phrase; see blast (v.) + off (adv.).

1570s, "procrastinating," from the verbal phrase; see off (adv.) + put (v.). Meaning "creating an unfavorable impression" is attested by 1894. To put off is attested from late 14c. as "defer, postpone, delay;" 1560s as "dismiss by an evasion;" 1610s as "divert from one's purpose." As a noun, put-off in the sense of "an excuse for evasion or delay" is attested from 1540s.

also stand-off, 1843, "draw, tie," from the verbal phrase (c. 1600), from stand (v.) + off (adv.). Mexican stand-off "stalemate" is recorded from 1891.

also offshore, 1720, "in a direction away from the shore," from off (prep.) + shore (n.). As an adjective in 19c., "carried on more than three miles from shore." American English use for "other than the U.S." is from 1948 and the Marshall Plan.

"escape," c. 1600, from get (v.) + off (adv.). Sexual sense attested by 1973.