Source : Webster's Revised Unabridged Dictionary (1913)

Envious \En"vi*ous\, a. [OF. envios, F. envieux, fr. L.
   invidiosus, fr. invidia envy. See {Envy}, and cf.
   {Invidious}.]
   1. Malignant; mischievous; spiteful. [Obs.]

            Each envious brier his weary legs doth scratch.
                                                  --Shak.

   2. Feeling or exhibiting envy; actuated or directed by, or
      proceeding from, envy; -- said of a person, disposition,
      feeling, act, etc.; jealously pained by the excellence or
      good fortune of another; maliciously grudging; -- followed
      by of, at, and against; as, an envious man, disposition,
      attack; envious tongues.

            My soul is envious of mine eye.       --Keble.

            Neither be thou envious at the wicked. --Prov. xxiv.
                                                  19.

   3. Inspiring envy. [Obs. or Poetic]

            He to him leapt, and that same envious gage Of
            victor's glory from him snatched away. --Spenser.

   4. Excessively careful; cautious. [Obs.]

            No men are so envious of their health. --Jer.
                                                  Taylor.
      -- {En"vi*ous*ly}, adv. -- {En"vi*ous*ness}, n.

Source : WordNet®

enviousness
     n : a feeling of grudging admiration and desire to have
         something possessed by another [syn: {envy}, {the
         green-eyed monster}]