He dilated upon his own prowesses, caressed his moustache, and threw side glances at Joan.
The sagas have sung the prowesses of Olaf; he is brave among the bravest.
late 13c., prouesse, from Old French proece "prowess, courage, brave deed" (Modern French prouesse), from prou, later variant of prud "brave, valiant," from Vulgar Latin *prodem (cf. Spanish proeza, Italian prodezza; see proud). 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].