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.
权威例句
1. Young and old saw in him an implacable opponent of apartheid.
无论老少都看出他是种族隔离制度的坚决反对者。
2. The move has won the implacable opposition of many economists.
该提案遭到了许多经济学家的坚决反对。
3. He knew that Karl could be an implacable foe.
他明白卡尔可能会成为他的死敌.
4. His hatred is implacable.
他的仇恨难于平息.
5. Willoughby's boast of his implacable character was to blame.