The AI-powered English dictionary
comparative more heartless, superlative most heartless
(obsolete) Without courage; fearful, cowardly. quotations
Cecilia then, though almost heartless, resolved upon talking with Mr. Harrel himself […].
1782, Frances Burney, Cecilia, II.iii.7
(now rare) Listless, unenthusiastic.
Without a physical heart. examples
Without feeling, emotion, or concern for others; uncaring. quotations examples
Mr. Burns is similarly perfectly cast as a heartless capitalist willing to do anything for a quick buck, even if it means endangering the lives of those around him and Marge elegantly rounds out the main cast as a good, pure-hearted and overly indulgent woman who sees the big, good heart (literally and metaphorically) of a monstrous man-brute.
2012 April 29, Nathan Rabin, “TV: Review: THE SIMPSONS (CLASSIC): “Treehouse of Horror III” (season 4, episode 5; originally aired 10/29/1992)”, in (Please provide the book title or journal name)