use: [13] The verb use comes via Old French user from Vulgar Latin *ūsāre. This was derived from ūsus, the past participle of Latin ūtī ‘use’ (source also of English utensil, utility [14], utilize [19], etc). Latin ūsus was also used as a noun, meaning ‘use, usage’, and this has given English the noun use [13] and the derivatives usage [13] (an Old French formation), usual, usurp, and usury. Abuse [14] and peruse [15] (etymologically ‘use up’) go back to the same Latin roots. => abuse, peruse, usual, usurp, usury, utensil, utilize
c. 1200, "employ for a purpose," from Old French user "employ, make use of, practice, frequent," from Vulgar Latin *usare "use," frequentative form of past participle stem of Latin uti "make use of, profit by, take advantage of, enjoy, apply, consume," in Old Latin oeti "use, employ, exercise, perform," of uncertain origin. Related: Used; using. Replaced Old English brucan (see brook (v.)). From late 14c. as "take advantage of."
c. 1200, "act of employing," from Anglo-French and Old French us "custom, practice, usage," from Latin usus "use, custom, practice, employment, skill, habit," from past participle stem of uti (see use (v.)).
