implacable

Implacable is a synonym of unamenable.

As adjectives the difference between implacable and unamenable

is that implacable is unplaceable; that cannot be put or placed while unamenable is not amenable.

Fiendish is a related term of implacable.

As adjectives the difference between fiendish and implacable

is that fiendish is sinister; evil; conniving; in the manner of a fiend while implacable is unplaceable; that cannot be put or placed.

As adjectives the difference between implacable and obstinate

is that implacable is not able to be placated or appeased while obstinate is stubbornly adhering to an opinion, purpose, or course, usually with implied unreasonableness; persistent.

Implacable is a synonym of uncompromising.

As adjectives the difference between implacable and uncompromising

is that implacable is unplaceable; that cannot be put or placed while uncompromising is inflexible and unwilling to negotiate or make concessions.

Severe is a related term of implacable.

As adjectives the difference between severe and implacable

is that severe is severe, harsh while implacable is unplaceable; that cannot be put or placed.

Harsh is a related term of implacable.

As adjectives the difference between harsh and implacable

is that harsh is unpleasantly rough to the touch or other senses while implacable is unplaceable; that cannot be put or placed.

As a verb harsh

is (slang) to negatively criticize.

Sullen is a related term of implacable.

As adjectives the difference between sullen and implacable

is that sullen is having a brooding ill temper; sulky while implacable is unplaceable; that cannot be put or placed.

As a noun sullen

is (obsolete) one who is solitary, or lives alone; a hermit.

Vicious is a related term of implacable.

As adjectives the difference between vicious and implacable

is that vicious is pertaining to vice; characterised by immorality or depravity while implacable is unplaceable; that cannot be put or placed.

Heartless is a related term of implacable.

As adjectives the difference between heartless and implacable

is that heartless is without a heart; specifically, without feeling, emotion, or concern for others; uncaring while implacable is unplaceable; that cannot be put or placed.

Gloomy is a related term of implacable.

As adjectives the difference between gloomy and implacable

is that gloomy is imperfectly illuminated; dismal through obscurity or darkness; dusky; dim; clouded while implacable is unplaceable; that cannot be put or placed.