late 14c., from Latin insolentia "unusualness, strangeness; excess, immoderation; haughtiness, arrogance," from insolentem "unusual; arrogant" (see insolent).
1940, from French extraordinaire (14c.), literally "extraordinary, unusual, out of the ordinary," but used colloquially as a superlative; see extraordinary, which represents an older borrowing of the same word.
"not spontaneous or voluntary, strained, unnatural," 1570s, past-participle adjective from force (v.). Meaning "effected by an unusual application of force" is from 1590s. Related: Forcedly. The flier's forced landing attested by 1917.
1747, originally a day of military exercise and review (see field (v.)); figurative sense "any day of unusual bustle, exertion, or display" [Century Dictionary] is from 1827.