The Collaborative International Dictionary of English v.0.48:

Overlarge \O"ver*large"\, a.
   Too large; too great.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

69 Moby Thesaurus words for "overlarge":
   a bit much, abandoned, aggrandized, amplified, ballyhooed,
   boundless, disproportionate, egregious, enormous, exaggerated,
   excessive, exorbitant, extravagant, extreme, fabulous, fancy,
   gigantic, gluttonous, grandiloquent, high, high-flown, hyperbolic,
   hypertrophied, immoderate, incontinent, inflated, inordinate,
   intemperate, magnified, monstrous, out of bounds, out of sight,
   outrageous, outsize, outsized, overbig, overdeveloped, overdone,
   overdrawn, overemphasized, overemphatic, overestimated, overfed,
   overgreat, overgrown, overmuch, overpraised, oversized, oversold,
   overstated, overstressed, overweening, overweight, overwrought,
   prodigal, profuse, puffed, steep, stiff, stretched, superlative,
   too big, too much, touted, unbridled, unconscionable, undue,
   unreasonable, unrestrained