Heartfelt synonyms such as cordial, ardent, and bona fide. Heartfelt is an adjective, and its antonyms are insincere and apathetic. Additionally, here are 21 synonyms for heartfelt and words similar to it.
Ardent, bona fide, cordial, deep, deeply felt, eager, earnest, enthusiastic, fervent, from the heart, full-hearted, genuine, honest, kindly, passionate, profound, sincere, unfeigned, warm, and wholehearted.