Definition of dandy :
1. A dandy roller. See below.
2. A sloop or cutter with a jigger on which a lugsail is set.
3. A small sail carried at or near the stern of small boats; - called also jigger, and mizzen.
4. One who affects special finery or gives undue attention to dress; a fop; a coxcomb.
not bad, prime, A-one, buster, divine, cracking, paragon, dreamy, keen, superb, great, nifty, groovy, sheikh, superior, slap-up, fashion plate, gem, terrific, ace, tribal sheikh, swain, quality, good, first-class, squire, marvelous, brag, fabulous, fellow, boss, tiptop, crestless wave, glorious, young man, bang-up, corking, blue-ribbon, splendid, banner, first-rate, smashing, bully, fine, sensational, tremendous, yawl, model, neat, cool, super, sheik, wonderful, topflight, champion, peachy, top, fantastical, ripping, excellent, boyfriend, tribal sheik, capital, tophole, topnotch, hot, fantastic
fop (part of speech: noun)
foppish (part of speech: adjective)