Source : Webster's Revised Unabridged Dictionary (1913)

Edgy \Edg"y\, a. [From {Edge}.]
   1. Easily irritated; sharp; as, an edgy temper.

   2. (Fine Arts) Having some of the forms, such as drapery or
      the like, too sharply defined. ``An edgy style of
      sculpture.'' --Hazlitt.

Source : WordNet®

edgy
     adj : being in a tense state [syn: {high-strung}, {highly strung},
            {in suspense(p)}, {jittery}, {jumpy}, {nervy}, {overstrung},
            {restive}, {uptight}]
     [also: {edgiest}, {edgier}]