Quenya 

uxarë

noun. doing wrong, doing wrong, *misdeed

A word appearing as uskare or uxare “doing wrong” in Definitive Linguistic Notes (DLN) from 1959, illustrating the use of the prefix us- “wrong”. It can be contrasted with loikare “mistaken action” and saucarë “doing or making a thing very badly” from the same document. These probably all function as nouns, but likely originate as infinitives of the verb car- “do”.