Word parts heart + breaking Pronunciation (UK) IPA (key): /hɑːt.breɪkɪŋ/ (US) IPA (key): /hɑrt.breɪkɪŋ/ Adjective Positive heartbreaking Comparative more heartbreaking Superlative most heartbreaking Something that is heartbreaking causes great grief, anguish or distress.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads