Moby Thesaurus II by Grady Ward, 1.0:

51 Moby Thesaurus words for "pleated":
   canaliculate, canaliculated, chamfered, channeled, corduroy,
   corduroyed, corrugate, corrugated, costate, creased, crimped, cut,
   dadoed, dog-eared, doubled, engraved, flexible, flounced, fluted,
   foldable, folded, folding, furrowed, gashed, gathered, goffered,
   gouged, grooved, incised, plaited, pliable, plicate, plicated,
   plicatile, quilled, rabbeted, ribbed, rifled, ruffled, rutted,
   rutty, scored, scratched, slit, striated, sulcate, sulcated,
   troughed, tucked, twilled, wrinkled