The Collaborative International Dictionary of English v.0.48:

Trite \Trite\ (tr[imac]t), a. [L. tritus, p. p. of terere to
   rub, to wear out; probably akin to E. throw. See Throw, and
   cf. Contrite, Detriment, Tribulation, Try.]
   Worn out; common; used until so common as to have lost
   novelty and interest; hackneyed; stale; as, a trite remark; a
   trite subject. -- Trite"ly, adv. -- Trite"ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

trite
    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]

Moby Thesaurus II by Grady Ward, 1.0:

107 Moby Thesaurus words for "trite":
   airy, asinine, automatic, back-number, banal, bathetic, beaten,
   bedridden, bewhiskered, bromidic, catchpenny, chain, cliche,
   cliched, common, commonly known, commonplace, constant, corny,
   current, cut-and-dried, drained, dull, empty, exhausted, fade,
   familiar, fatuous, flat, flimsy, foolish, frequent, fribble,
   fribbling, frivolous, frothy, fusty, futile, habitual, hack,
   hackney, hackneyed, household, idle, inane, jejune, light,
   mildewed, moth-eaten, musty, notorious, nugacious, nugatory,
   old hat, ordinary, otiose, overworked, persistent, platitudinous,
   prosaic, proverbial, public, ready-made, recurrent, recurring,
   regular, repetitive, routine, set, shallow, shopworn, silly,
   slender, slight, square, stale, stereotyped, stock, superficial,
   talked-about, talked-of, threadbare, timeworn, tired, trifling,
   trivial, truistic, twice-told, universally admitted,
   universally recognized, unoriginal, used up, vacuous, vain, vapid,
   warmed-over, well-kenned, well-known, well-recognized,
   well-trodden, well-understood, well-worn, widely known, windy,
   worn, worn thin, worn-out