1530s, "not capable of sin," from Middle French impeccable (15c.) or directly from Late Latin impeccabilis "not liable to sin," from assimilated form of in- "not, opposite of" (see in- (1)) + pecare "to sin," of unknown origin. Meaning "faultless" is from 1610s. Related: Impeccably.
中文解释
1. from Latin peccare "to sin".2. peck => impeccable.3. “无瑕号”事件: 美军海军无瑕号（USNS Impeccable）.
