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Webster 1913 Edition

Verb.

To give wrong or unesthetic proportions to; to join without due proportion;

as, the legs were

misrpoportioned

to the body

Verb.

To err in proportioning one thing to another; to join without due proportion.

misproportion ‎(third-person singular simple present misproportions, present participle misproportioning, simple past and past participle misproportioned)