Where does “neuyesh” come from?

neuyesh (Manx) comes from Manx neu-, from Middle Irish nem-, from Old Irish neb-.

neuyesh (Manx): improper, incorrect; clumsy, inelegant,...

Definitions

Step	Language	Word	Meaning
1	Manx	neu-	un-, non-, dis-
2	Middle Irish	nem-	not, non-, un-
3	Old Irish	neb-	—