Ir·ri·tate, v. t. [imp. & p. p. Irritated p. pr. & vb. n. Irritating ]
  1. To increase the action or violence of; to heighten excitement in; to intensify; to stimulate.
     Cold maketh the spirits vigorous and irritateth them.   --Bacon.
  2. To excite anger or displeasure in; to provoke; to tease; to exasperate; to annoy; to vex; as, the insolence of a tyrant irritates his subjects.
  Dismiss the man, nor irritate the god:
  Prevent the rage of him who reigns above.   --Pope.
  3. Physiol. To produce irritation in; to stimulate; to cause to contract. See Irritation, n., 2.
  4. Med. To make morbidly excitable, or oversensitive; to fret; as, the skin is irritated by friction; to irritate a wound by a coarse bandage.
  Syn: -- To fret; inflame; excite; provoke; tease; vex; exasperate; anger; incense; enrage.
  Usage: -- To Irritate, Provoke, Exasperate. These words express different stages of excited or angry feeling. Irritate denotes an excitement of quick and slightly angry feeling which is only momentary; as, irritated by a hasty remark. To provoke implies the awakening of some open expression of decided anger; as, a provoking insult. Exasperate denotes a provoking of anger at something unendurable. Whatever comes across our feelings irritates; whatever excites anger provokes; whatever raises anger to a high point exasperates. “Susceptible and nervous people are most easily irritated; proud people are quickly provoked; hot and fiery people are soonest exasperated.”  --Crabb.
  irritated
       adj 1: feeling inflammation or other discomfort (especially in a
              part of the body)
       2: aroused to impatience or anger; "made an irritated gesture";
          "feeling nettled from the constant teasing"; "peeved about
          being left out"; "felt really pissed at her snootiness";
          "riled no end by his lies"; "roiled by the delay" [syn: annoyed,
           miffed, nettled, peeved, pissed, pissed off, riled,
           roiled, steamed, stunng]