Webster's Revised Unabridged Dictionary · 1913

Unequal

Unequal , adjective

[Compare 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. — Shakespeare
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.
(Botany) Not having the two sides or the parts symmetrical.