Where does “alt-right” come from?

alt-right (Dutch) comes from English alt-right, from English alternative right — The alt-right.

alt-right (Dutch): alt-right

Definitions

Step	Language	Word	Meaning
1	English	alt-right	An amorphous group of right-wing ideologies...
2	English	alternative right	The alt-right

alt-right — Etymology, Origin & Word History | Etymology Explorer