[syn: antique, demode, ex, old-fashioned, old-hat(p), outmoded, passe, passee]
The Collaborative International Dictionary of English v.0.48:
old-hat \old-hat\ pred. adj.
   same as old-fashioned, a., 2. [Narrower terms:
   unfashionable (vs. fashionable)]
   Syn: antique, old-fashioned, outmoded, out-of-date, passe,
        passee.
        [WordNet 1.5]
WordNet (r) 3.0 (2006):
old-hat
    adj 1: repeated too often; overfamiliar through overuse;
           "bromidic sermons"; "his remarks were trite and
           commonplace"; "hackneyed phrases"; "a stock answer";
           "repeating threadbare jokes"; "parroting some timeworn
           axiom"; "the trite metaphor `hard as nails'" [syn:
           banal, commonplace, hackneyed, old-hat,
           shopworn, stock(a), threadbare, timeworn,
           tired, trite, well-worn]
    2: out of fashion; "a suit of rather antique appearance";
       "demode (or outmoded) attire"; "outmoded ideas" [syn:
       antique, demode, ex, old-fashioned, old-hat(p),
       outmoded, passe, passee]