ISEE/SSAT Vocabulary Builder›Words›I›implacable
ISEE/SSAThard
implacable
unable to be calmed, softened, or satisfied
Synonyms
- unyielding
- relentless
- inflexible
Antonyms
- forgiving
- appeasable
implacable in a sentence
The detective was implacable in her search for the truth.
The reformer met implacable opposition from officials who refused every compromise.
Where it comes from
From Latin implacabilis, meaning 'not able to be appeased.'
Memory hook
IM- means 'not' and placate means 'calm'; implacable means not calmable.
Read it in context
- The Eastern Turn History
Practice implacable in the app