Part of speech:
Full of or given to revenge.
Providing a margin for error or shortcomings.
Difficult to endure; oppressive:
Grim is defined as stern or unmoving.
Not diminishing in intensity, pace, or effort:
Not relenting; harsh; pitiless
The definition of cruel is someone or something that deliberately causes pain or suffering.
Find another word for unforgiving. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for unforgiving, like: inexorable, revengeful, avenging, ruthless, forgiving, stern, grim, unappeasable, unrelenting, relentless and cruel.