irritative

from WordNet (r) 3.0 (2006)

irritative
    adj 1: (used of physical stimuli) serving to stimulate or
           excite; "an irritative agent" [syn: {irritating},
           {irritative}]

from The Collaborative International Dictionary of English v.0.48

Irritative \Ir"ri*ta*tive\, a.
   1. Serving to excite or irritate; irritating; as, an
      irritative agent.
      [1913 Webster]

   2. Accompanied with, or produced by, increased action or
      irritation; as, an irritative fever. --E. Darwin.
      [1913 Webster]