1540s, "confident, intrepid, daring," from French audacieux, from audace "boldness," from Latin audacia "daring, boldness, courage," from audax "brave, bold, daring," but more often "bold" in a bad sense, "rash, foolhardy," from audere "to dare, be bold," which de Vaan says is derived from avidus "greedy" (see avarice). In English, the bad sense of "shameless, unrestrained by propriety" is attested from 1590s. Related: Audaciously; audaciousness.

late 14c., "miserly, stingy;" early 15c., "greedy, covetous," from Old French avaricios "greedy, covetous" (Modern French avaricieux), from avarice "greed" (see avarice). An Old English word for it was feoh-georn. Related: Avariciously; avariciousness.

"eager; greedy," 1769, from French avide (15c.), from Latin avidus "longing eagerly, desirous, greedy," from avere "to desire eagerly" (see avarice). Also in part a back-formation from avidity. Related: Avidly.

mid-15c., avidite, "eagerness, zeal," from Old French avidite "avidity, greed" or directly from Latin aviditatem (nominative aviditas) "eagerness, avidity," noun of quality from past-participle stem of avere "to desire eagerly" (see avarice).