unequal

adjective

1. not equal; not of the same quantity, quality, value, rank, ability, etc.: People are unequal in their capacities.
2. not adequate, as in amount, power, ability, etc. (usually followed by to): strength unequal to the task.
3. not evenly proportioned or balanced; not having the parts alike or symmetrical: an unequal leaf.
4. uneven or variable in character, quality, etc.
5. Obsolete. inequitable; unfair; unjust.

noun

6. unequals, persons or things not equal to each other: a contest between obvious unequals.

adjective

1. not equal in quantity, size, rank, value, etc
2. (foll by to) inadequate; insufficient
3. not evenly balanced
4. (of character, quality, etc) irregular; varying; inconsistent
5. (of a contest, etc) having competitors of different ability
6. obsolete unjust

adj.1530s, “unjust, unfair,” from un- (1) “not” + equal (adj.). Meaning “not the same in amount, size, quality, etc.” is recorded from 1560s (inequal in this sense is from late 14c.). Sense of “inadequate, insufficient” (to some task) is attested from 1690s.