Without feeling, emotion, or concern for others; uncaring; cruel.
His heartless actions and cold manner left her saddened and feeling alone.
Without a physical heart.
Listless, unenthusiastic.
Near-synonyms: spiritless, unhearty
From Middle English hertles, herteles, from Old English heortlēas (“without courage; listless”), equivalent to heart + -less. Cognate with German herzlos.
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