WordNet (r) 3.0 (2006):

inflationary
    adj 1: associated with or tending to cause increases in
           inflation; "inflationary prices" [ant: deflationary]

Moby Thesaurus II by Grady Ward, 1.0:

35 Moby Thesaurus words for "inflationary":
   cutthroat, dilatant, distensive, elastic, exacting, excessive,
   exorbitant, expansible, expansile, expansional, expansive,
   extensile, extensional, extensive, extortionate, extravagant,
   fancy, gouging, grossly overpriced, immoderate, inflatable,
   inordinate, out of bounds, out of sight, outrageous, overpriced,
   preposterous, prohibitive, skyrocketing, spiraling, unconscionable,
   undue, unreasonable, unwarranted, usurious