Source : Webster's Revised Unabridged Dictionary (1913)

Unequal \Un*e"qual\, a. [Cf. {Inequal}.]
   1. Not equal; not matched; not of the same size, length,
      breadth, quantity, strength, talents, acquirements, age,
      station, or the like; as, the fingers are of unequal
      length; peers and commoners are unequal in rank.

   2. Ill balanced or matched; disproportioned; hence, not
      equitable; partial; unjust; unfair.

            Against unequal arms to fight in pain. --Milton.

            Jerome, a very unequal relator of the opinion of his
            adversaries.                          --John
                                                  Worthington.

            To punish me for what you make me do Seems much
            unequal.                              --Shak.

   3. Not uniform; not equable; irregular; uneven; as, unequal
      pulsations; an unequal poem.

   4. Not adequate or sufficient; inferior; as, the man was
      unequal to the emergency; the timber was unequal to the
      sudden strain.

   5. (Bot.) Not having the two sides or the parts symmetrical.

Source : WordNet®

unequal
     adj 1: not equal in amount; "they distributed unlike (or unequal)
            sums to the various charities" [syn: {unlike}] [ant: {like}]
     2: poorly balanced or matched in quantity or value or measure
        [ant: {equal}]