Deviating from the ordinary rule; eccentric, abnormal.
Being irregularly declined or inflected.
An irregularly declined or inflected word
A person who is unconventional; a maverick
A word whose etymological roots come from distinct, different languages or language groups.
Pedantic.
A person who is overly concerned with formal rules and trivial points of learning.
A person who makes an excessive or tedious show of their knowledge, especially regarding rules of vocabulary and grammar.