Etymology
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brave (adj.)

"exhibiting courage or courageous endurance," late 15c., from French brave, "splendid, valiant," from Italian bravo "brave, bold," originally "wild, savage," a word of uncertain origin. Possibly from Medieval Latin bravus "cutthroat, villain," from Latin pravus "crooked, depraved;" a less likely etymology being from Latin barbarus (see barbarous). A Celtic origin (Irish breagh, Cornish bray) also has been suggested, and there may be a confusion of two or more words. Related: Bravely.

Old English words for this, some with overtones of "rashness," included modig (now "moody"), beald ("bold"), cene ("keen"), dyrstig ("daring"). Brave new world is from the title of Aldous Huxley's 1932 satirical utopian novel; he lifted the phrase from Shakespeare ("Tempest" v.i.183).

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brave (v.)
"to face with bravery," 1761, from French braver, from brave "valiant" (see brave (adj.)). Related: Braved; braving.
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brave (n.)
"North American Indian warrior," 1827, from brave (adj.). Earlier "a hector, a bully" (1590s); "brave, bold, or daring person" (c. 1600). Compare bravado, bravo.
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braw (adj.)

"handsome, worthy, excellent," a Scottish English formation and pronunciation of brave.

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bravura (n.)
1788, "a spirited, florid piece of music requiring great skill in the performer," from Italian bravura "bravery, spirit" (see brave (adj.)). Sense of "display of brilliancy, dash" is from 1813.
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bravado (n.)
1580s, "ostentatious courage, pretentious boldness," from French bravade "bragging, boasting," from Italian bravata "bragging, boasting" (16c.), from bravare "brag, boast, be defiant," from bravo "brave, bold" (see brave (adj.)). The English word was influenced in form by Spanish words ending in -ado. It also was used as a noun 17c.-18c., "swaggering fellow."
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bravery (n.)

1540s, "daring, defiance, boasting," from French braverie, from braver "to brave" (see brave (adj.)) or else from cognate Italian braveria, from bravare.

No Man is an Atheist, however he pretend it and serve the Company with his Braveries. [Donne, 1631]

The original deprecatory sense is obsolete; as a good quality attested perhaps from 1580s, but it is not always possible to distinguish the senses. Meaning "fine clothes, showiness" is from 1560s and holds the older notion of ostentatious pretense.

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bravo (interj.)

"well done!," 1761, from Italian bravo, literally "brave" (see brave (adj.)). Earlier it was used as a noun meaning "desperado, hired killer" (1590s). Superlative form is bravissimo.

It is held by some philologists that as "Bravo!" is an exclamation its form should not change, but remain bravo under all circumstances. Nevertheless "bravo" is usually applied to a male, "brava" to a female artist, and "bravi" to two or more. ["Elson's Music Dictionary," 1905]
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prowess (n.)

early 13c., prouesse, "an act of bravery;" c. 1300, "military bravery combined with skill in combat," from Old French proece "prowess, courage, brave deed" (Modern French prouesse), from prou, later variant of prud "brave, valiant," from Vulgar Latin *prodem (source also of Spanish proeza, Italian prodezza; see proud (adj.)). Prow was in Middle English as a noun meaning "advantage, profit," also as a related adjective ("valiant, brave"), but it has become obsolete. "In 15-17th c. often a monosyllable" [OED].

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Kenelm 
masc. proper name, Old English Cenhelm, from cene "brave, bold" (see keen (adj.)) + helm "helmet" (see helmet (n.)).
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