WordNet (r) 3.0 (2006):

acrobatics
    n 1: the gymnastic moves of an acrobat [syn: acrobatics,
         tumbling]
    2: the performance of stunts while in flight in an aircraft
       [syn: acrobatics, aerobatics, stunting, stunt flying]

Moby Thesaurus II by Grady Ward, 1.0:

36 Moby Thesaurus words for "acrobatics":
   Rugby, aerobatics, agonistics, association football, athletics,
   banking, bathing, chandelle, crabbing, dive, diving, fishtailing,
   glide, gymnastics, natation, nose dive, palaestra, power dive,
   pull-up, pullout, pushdown, rolling, rugger, sideslip, soccer,
   spiral, sports, stall, stunting, swimming, tactical maneuvers,
   track, track and field, tumbling, volplane, zoom