1. from Latin peccare "to sin".
2. peck => impeccable.
3. “无瑕号”事件: 美军海军无瑕号(USNS Impeccable).
中文词源
impeccable 无瑕疵的
im-,不,非,peccable,易犯罪的,易犯过失的。即无过失的,后引申词义无瑕疵的。
英文词源
impeccable (adj.)
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.