Antonyms of adj heartless

2 senses of heartless

Sense 1
hardhearted (vs. softhearted), heartless -- (lacking in feeling or pity or warmth)


Sense 2
heartless -- (devoid of courage or enthusiasm)

INDIRECT (VIA spiritless) -> spirited -- (displaying animation, vigor, or liveliness)

Similarity of adj heartless

2 senses of heartless

Sense 1
hardhearted (vs. softhearted), heartless -- (lacking in feeling or pity or warmth)
       => flinty, flint, granitic, obdurate, stony -- (showing unfeeling resistance to tender feelings; "his flinty gaze"; "the child's misery would move even the most obdurate heart")

Sense 2
heartless -- (devoid of courage or enthusiasm)
       => spiritless (vs. spirited) -- (lacking ardor or vigor or energy; "a spiritless reply to criticism")