The Collaborative International Dictionary of English v.0.48:

Charivari \Cha*ri`va*ri"\, n. [F.]
   A mock serenade of discordant noises, made with kettles, tin
   horns, etc., designed to annoy and insult; -- called also
   shivaree.

   Syn: shivaree, charivari, callithump, callathump.
        [1913 Webster]

   Note: It was at first performed before the house of any
         person of advanced age who married a second time.
         [1913 Webster]

WordNet (r) 3.0 (2006):

charivari
    n 1: a noisy mock serenade (made by banging pans and kettles) to
         a newly married couple [syn: shivaree, chivaree,
         charivari, callithump, callathump, belling]

Moby Thesaurus II by Grady Ward, 1.0:

48 Moby Thesaurus words for "charivari":
   Bedlam let loose, bedlam, blast, bobbery, brawl, brouhaha, chirm,
   clamor, clangor, clap, clatter, commotion, din, discord,
   donnybrook, drunken brawl, dustup, flap, fracas, free-for-all,
   hell broke loose, howl, hubbub, hue and cry, hullabaloo, jangle,
   loud noise, noise, noise and shouting, outcry, pandemonium, racket,
   rattle, rhubarb, riding, roar, row, ruckus, ruction, rumble,
   rumpus, shindy, shivaree, thunder, thunderclap, tintamarre, tumult,
   uproar