Heteroclite

from The Collaborative International Dictionary of English v.0.48

Heteroclite \Het"er*o*clite\, a. [L. heteroclitus, Gr. ?; ?
   other + ? to lean, incline, inflect: cf. F.
   h['e]t['e]roclite.]
   Deviating from ordinary forms or rules; irregular; anomalous;
   abnormal.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Heteroclite \Het"er*o*clite\, n.
   1. (Gram.) A word which is irregular or anomalous either in
      declension or conjugation, or which deviates from ordinary
      forms of inflection in words of a like kind; especially, a
      noun which is irregular in declension.
      [1913 Webster]

   2. Any thing or person deviating from the common rule, or
      from common forms. --Howell. Heteroclitic