# implacable

/ˌɪmˈpɫækəbəɫ/ (US) · /ɪmplˈækəbəl/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/implacable
Updated: 2026-10-18

## Definition

so angry or determined that nothing can calm it down or change it. You use this for anger, hate, or opposition that will not stop.

For teachers: incapable of being calmed, appeased, or reconciled; relentlessly hostile or unyielding. Often describes anger, hatred, opposition, or pursuit that persists despite attempts to soften it.

## Examples

- She faces implacable opposition from her rivals.
- The mayor faces implacable critics who reject every compromise on the new housing plan.
- Despite months of negotiation, the two families remained implacable, each treating every concession as weakness rather than a step toward peace.

## Synonyms

relentless, unforgiving, merciless, ruthless, unyielding

## Antonyms

forgiving, merciful

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.