Open English Wordnet
Nouns
(n)sweetheartany well-liked individual“he's a sweetheart” (n)smasher, stunner, knockout, beauty, ravisher, sweetheart, peach, lulu, looker, mantrap, disha very attractive or seductive looking woman (n)beloved, dear, dearest, honey, love, baby, darling, deary, dearie, sweetheart, sweetiea beloved person; used as terms of endearment Adjectives
(s)sweetheartprivileged treatment of a favored person or corporation (sometimes unethically)“another sweetheart deal based on political influence”