- implacable
[implacable 词源字典]
- implacable: see please
[implacable etymology, implacable origin, 英语词源] - implacable (adj.)
- early 15c., from Old French implacable, from Latin implacabilis "unappeasable," from assimilated form of in- "not, opposite of" (see in- (1)) + placabilis "easily appeased" (see placate). Related: Implacably.