[syn: dandy, dude, fop, gallant, sheik, beau, swell, fashion plate, clotheshorse]
The Collaborative International Dictionary of English v.0.48:
Dude \Dude\, n.
   A kind of dandy; especially, one characterized by an
   ultrafashionable style of dress and other affectations.
   [Recent]
   [1913 Webster]
         The social dude who affects English dress and English
         drawl.                                   --The
                                                  American.
   [1913 Webster]
WordNet (r) 3.0 (2006):
dude
    n 1: an informal form of address for a man; "Say, fellow, what
         are you doing?"; "Hey buster, what's up?" [syn: fellow,
         dude, buster]
    2: a man who is much concerned with his dress and appearance
       [syn: dandy, dude, fop, gallant, sheik, beau,
       swell, fashion plate, clotheshorse]
Moby Thesaurus II by Grady Ward, 1.0:
31 Moby Thesaurus words for "dude":
   Beau Brummel, beau, blade, blood, boulevardier, buck, chap,
   clotheshorse, coxcomb, dandy, exquisite, fashion plate, fellow,
   fine gentleman, fop, fribble, gallant, guy, jack-a-dandy,
   jackanapes, lady-killer, lounge lizard, macaroni, man,
   man-about-town, masher, popinjay, puppy, spark, sport, swell