implacable
C1CEFR level
60/100Rarity: rare
FormalRegister
General adjective
Unable to be appeased, placated, or stopped.
He was an implacable foe who pursued his vendetta to the very end.
Law adjective
Unable to be appeased or placated.
The founder's implacable hostility to his former partner doomed every conciliation attempt.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
Get words like implacable on your lock screen, a few a day, with review that makes them stick.
Download on the App Store Lexfall puts a new word on your home and lock screen through widgets, so you learn without opening an app. Free to download. After a free trial, a subscription unlocks every field. Built for iPhone, iOS 15.1 or later.
On a computer?Scan with your iPhone camera.