brute; beast; monster; inhuman person; ungrateful person
A strong insult for someone who lacks human decency, empathy, or gratitude; often used in emotional or dramatic contexts.
He's a monster for doing something like that.
Returning kindness with betrayal is beyond inhuman.
Standard spelling; the なし part is usually written in kana.
Rarely used kanji form; the 無し spelling is uncommon.
Compound of 人 (ひと, 'person') + で (copula connective form) + なし (無し, 'without'), literally 'not a person'. The phrase has been used since at least the Edo period to describe someone who lacks human qualities.