WordNet (r) 3.0 (2006):

roughhouse
    v 1: engage in rough or disorderly play

Moby Thesaurus II by Grady Ward, 1.0:

87 Moby Thesaurus words for "roughhouse":
   act up, ado, badness, behave ill, bother, brawl, broil, brouhaha,
   carry on, commotion, cut up, cut up rough, discourtesy, disorder,
   disorderliness, disorderly conduct, disruption, disruptiveness,
   disturbance, donnybrook, donnybrook fair, dustup, embroilment,
   foofaraw, fooling, fracas, free-for-all, frowned-upon behavior,
   fuss, get into mischief, go on, hassle, hell around,
   helter-skelter, high jinks, hooliganism, horse around, horseplay,
   hubbub, impropriety, knock about, maffick, melee, misbehave,
   misbehavior, misconduct, misdemean, misdemeanor, misdoing,
   mishandle, naughtiness, nonsanctioned behavior, pell-mell,
   play the fool, pother, racket, raise Cain, raise hell, raise sand,
   raise the deuce, raise the devil, raise the roof, rampage, riot,
   rough up, rough-and-tumble, row, rowdiness, rowdyism, ruckus,
   ruction, ruffianism, rumpus, scramble, shindy, skylarking, stir,
   to-do, trouble, tumult, turmoil, uproar, vandalism, venial sin,
   vice, whoop it up, wrongdoing