Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
warmhearted is an adjective meaning "marked by warmth of feeling like kindness and sympathy and generosity". It carries one recorded sense.
marked by warmth of feeling like kindness and sympathy and generosity
“gave a warmhearted welcome to the stranger”
Definitions, synonyms and semantic relations for warmhearted come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.