[1] : WordNet (r) 2.0

overplay
     v : exaggerate one's acting syn: overact, ham it up, ham
         ant: underact
see also:
overact ham it up ham underact 

[2] : Moby Thesaurus II by Grady Ward, 1.0

67 moby thesaurus words for "overplay":
   accent, accentuate, carry too far, dramatize, exaggerate, exhaust,
   go overboard, go to extremes, go too far, hyperbolize,
   know no bounds, magnify, maximize, outclass, outdo, outgo, outjump,
   outleap, outmaneuver, outmarch, outpace, outperform, outplay,
   outpoint, outrange, outreach, outride, outrival, outrun, outshine,
   outstep, outstrip, outvie, outwit, overact, overcarry, overdevelop,
   overdo, overdraw, overdrive, overelaborate, overemphasize,
   overexercise, overexert, overexpend, overindulge, overjump,
   overlabor, overleap, overmatch, overreact, override, overspend,
   overstate, overstrain, overstress, overstudy, overtask, overtax,
   overtrain, overuse, overvalue, overwork, pass all bounds, point up,
   protest too much, stretch

Overplay >> O Words
Overplay, definition of term: Overplay
overplay_pag1.html