Meanings
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1
adj
unwilling to forgive an offense or show mercy
He remained unforgiving even after she offered a sincere apology.
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2
adj
harsh or demanding, allowing little or no margin for weakness or error
The desert is an unforgiving environment for an unprepared traveler.
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3
adj
of clothing, materials, or images: tending to expose physical flaws or imperfections
The glossy fabric was unforgiving under the bright stage lights.
Thesaurus
Etymology
Formed from un- + forgiving, the participial adjective of forgive. Forgive descends from Old English forgiefan, literally involving the sense of giving up or releasing; unforgiving therefore describes a refusal to release blame, later extended to harsh conditions that make no allowance for mistakes.