Impacable a. : Not to be appeased or quieted.

Example:


Taxonomy
Merriam-Webster Online Dictionary, pec, Dictionary, webster, Word Games, Webster Online Dictionary with audio pronunciations, glossary, english, language, ESL, Search, ble, pek, adjective, Etymology, Latin, peccare, fault.

Defination from the web:
impeccable from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... Learn more about "impeccable" with Google Search: Custom Search. Learn more about "impeccable" and related topics at Britannica.com ...