heartsick

If you've lost someone you love, you'll be desperately sad, or heartsick. Your beloved grandmother's death or your best friend moving far away can both make you feel heartsick.

Grief and loss are connected to the adjective heartsick. When someone's heartsick, they're not just bummed out — they are grieving and mournful. You could also describe this as being heartbroken or heavy-hearted. The heart is important here, because of the strong emotion associated with the word. Originally, heartsick literally meant "ill from heart disease."

Definitions of heartsick
  1. adjective
    full of sorrow
    synonyms: brokenhearted, heartbroken
    sorrowful
    experiencing or marked by or expressing sorrow especially that associated with irreparable loss
  2. adjective
    without or almost without hope
    “too heartsick to fight back”
    synonyms: despondent
    hopeless
    without hope because there seems to be no possibility of comfort or success
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