sweetheart

1 a person with whom one is in love I married my high-school sweetheart as soon as we both finished college Synonyms beloved, darling, dear, flame, hon, honey, love, squeeze [slang], sweet, sweetie, sweetie pie, truelove Related Words beau, boy, boyfriend, fellow, man, swain; gal, girl, girlfriend, inamorata, ladylove, lass, mistress, tootsie; amour, lover, paramour; doll, duck(s) [chiefly British], pet; date, escort, steady; admirer, gallant, suitor, wooer; groom, husband; bride, wife; significant other; fiancé, intended; crush, heartthrob

2 something very good of its kind a charming waterfront cottage that's a real sweetheart Synonyms beaut, beauty, bee's knees, cat's meow, corker, crackerjack (also crackajack), daisy, dandy, dilly, doozy (or doozie also doozer), dream, honey, hot stuff, humdinger, hummer, knockout, lollapalooza, lulu [slang], nifty, peach, pip, pippin, ripper, ripsnorter, snorter, sockdolager (or sockdologer), standout, jim-dandyRelated Words marvel, phenomenon, prodigy, sensation, wonder; catch, crown jewel, diamond, gem, imperial, jewel, pearl, plum, treasureNear Antonyms bust, disappointment, dud, failure, flop, lemon, letdown, loser, stinker, turkey