1. (noun)sweetheart, sweetie, steady, truelove a person loved by another person
2. (noun)sweetheart any well-liked individual "he's a sweetheart"
3. (adj)smasher, stunner, knockout, beauty, ravisher, sweetheart, peach, lulu, looker, mantrap, dish a very attractive or seductive lookingwoman
4. (adj)sweetheart privileged treatment of a favored person or corporation (sometimes unethically) "another sweetheart deal based on political influence"