English dictionary

implacable

/I/m'pl/&/k/@/b/@/l/

Definitions, examples, synonyms and antonyms from WordNet 3.0.

adjective

incapable of being placated

adj.all

Examples
An implacable enemy.

Antonyms placable

Source: WordNet 3.0
Not placable; not to be appeased; incapable of being pacified; inexorable; as, an implacable prince.

adjective

Source: webster1913