0 used to describe (someone who has) strong opinions or feelings that are impossible to change: --
1 unable to be changed, satisfied, or stopped: --
an implacable enemy
They were confronted by an apparently implacable bureaucracy.
Not only are they sincere and courageous, but at least they are consistent in their implacable opposition to both capital punishment and corporal punishment.
He regards it as the impotent malice of whoever suffers from an irreversible disadvantage in life, and implacable accordingly.
Diana's change from implacable goddess to vulnerable woman is essentially a psychological rather than a circumstantial change, and it is realised musically as well as poetically.
Death was not a release f or them, but rather an implacable enemy to be resisted and overcome.
Rigour is implacable, but so too is freedom.
War is best narrated, however, in the apocalyptic mode of the life and death struggle between unimpeachable good and implacable evil.
Thereafter, the plays are surveyed, chapter by chapter, in implacable chronological order.