heartless

adj

Etymology: From Middle English hertles, herteles, from Old English heortlēas (“without courage; listless”), equivalent to heart + -less. Cognate with German herzlos.

1. Without feeling, emotion, or concern for others; uncaring; cruel.

   “His heartless actions and cold manner left her saddened and feeling alone.”

   “The world is a dangerous, violent place […] and the only true refuge from this heartless world is the family.”

2. Without a physical heart.
3. Listless, unenthusiastic.

   “Near-synonyms: spiritless, unhearty”

4. Without courage; fearful, cowardly.

   “Cecilia then, though almost heartless, resolved upon talking with Mr. Harrel himself […].”