disproportion

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Absence of proportion, symmetry, or proper relation.
• noun An instance of a disproportionate relation.
• transitive verb To make disproportionate.

from The Century Dictionary.

• noun Want of proportion of one thing to another, or between the parts of the same thing; lack of symmetry; absence of conformity or due relation in size, number, quantity, etc.: as, the disproportion of a man's arms to his body, or of means to an end; the disproportion between supply and demand.
• noun Disproportion, some say, is the cause of the keenest misery in the world: for instance, the disproportion between the powers, capacities, and aspirations of man and his circumstances—especially as regards his physical wants.
• To make unsuitable in dimensions or quantity; mismatch; join unfitly.

from the GNU version of the Collaborative International Dictionary of English.

• noun Want of proportion in form or quantity; lack of symmetry
• noun Want of suitableness, adequacy, or due proportion to an end or use; unsuitableness; disparity.
• transitive verb To make unsuitable in quantity, form, or fitness to an end; to violate symmetry in; to mismatch; to join unfitly.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun something that is out of proportion; an abnormal or improper ratio; an imbalance
• verb transitive To make unsuitable in quantity, form, or fitness; to violate symmetry in; to mismatch.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun lack of proportion; imbalance among the parts of something