英语词汇ingratitude的起源、历史背景-英语词源词典

词汇	ingratitude
词源	ingratitude n. mid-14c., from Old French ingratitude "ungratefulness" (13c.) and directly from Late Latin ingratitudinem (nominative ingratitudo) "unthankfulness," noun of quality from Latin ingratus "ungrateful" (see ingrate). Entries linking to ingratitude ingrate n. "ungrateful person," 1670s, from earlier adjective meaning "unfriendly," also "ungrateful, unthankful" (14c.), from Latin ingratus "unpleasant, disagreeable," also "ungrateful, unthankful," and "thankless, unprofitable," from in- "not" (see in- (1)) + gratus "pleasing, beloved, dear, agreeable" (from suffixed form of PIE root *gwere- (2) "to favor"). updated on November 28, 2015
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ingratitude n.