English word in- comes from Latin ingratus (Thankless. Ungrateful. Unpleasant, disagreeable.)

You can also see our other etymologies for the English word in-. Currently you are viewing the etymology of in- with the meaning: (Prefix) In, into.In, into

Detailed word origin of in-

Dictionary entry	Language	Definition
ingratus	Latin (lat)	Thankless. Ungrateful. Unpleasant, disagreeable.
in-	English (eng)	In, into.