This word is acceptable for play in the UK dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. In linguistics, particularly Indo-European Studies, signifying a stem which alternates between more than one form when declined for grammatical case. Examples of heteroclitic noun stems in Proto-Indo-European include *wod-r/n- "water" (nominoaccusative *wódr; genitive *udnés; locative *udén) and *yékw-r/n- "liver" (nominoaccusative *yékwr, genitive *ikwnés). In Proto-Indo-European, heteroclitic stems tend to be noun stems with grammatically inanimate gender.

n. A heteroclitic noun.

adj. Deviating from ordinary forms or rules; irregular; anomalous; abnormal.

n. Same as heteroclite.

"Thus, the heteroclitic verb car-tanaiy (present stem kunau, past stem kar- or car) had the past participle kr̥-ta-, which yields New Persian kard-an (present stem -kon-, past stem kard-)."

heteroclitical   

heteroclite    heteroclisis   

irregular    anomalous    abnormal