IPA: /ˈhɑːrtˌsɪk/
KK: /hɑrtˌsɪk/
Feeling very sad or disappointed, often because of love or loss.
After the breakup, she felt heartsick for weeks.
Heartsick → It is formed from "heart" (from Old English "heorte", meaning the organ that pumps blood and also symbolizes emotion) and "sick" (from Old English "sic", meaning ill or unwell). The word "heartsick" describes a state of emotional distress or sorrow that affects one's heart.
Think of feeling emotionally unwell ('sick') in your heart, which helps you remember that 'heartsick' means feeling deep emotional pain or sorrow.
No commonly confused words.