Etymology

impacable

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Today it means: implacable (unable to be appeased) Full definition →

Latin im-
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The story

  1. Latin · derived fromim-“not”
  2. English todayimpacable

From Latin im- (“not”) + pacare (“to quiet”). See pacate.

Words from the same roots

Latinim- all →

immaterialimpregnableimperturbableim-imburseimpertransible

Etymology from Wiktionary, CC BY-SA 4.0.