I. noun Date: 1580 a word irregular in inflection, one that deviates from common forms or rules, II. adjective see: lean Date: 1598 deviating from common rules or forms
HETEROCLITE
Meaning of HETEROCLITE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012