Where does “inwerk” come from?

inwerk (Middle English) comes from Old English inweorc, from Old English in-, from Old English in, from Proto-West Germanic *in, from Proto-Germanic in, from Proto-Indo-European én — in.

Ancestry of “inwerk”, step by step

Step	Language	Word	Meaning
1	Old English	inweorc	indoor work
2	Old English	in-	in, into; on, upon; internal, positioned on the...
3	Old English	in	in; Alternative form of inn
4	Proto-West Germanic	*in	—
5	Proto-Germanic	in	in; into
6	Proto-Indo-European	én	in

Every word from Proto-Indo-European én →Every word from Proto-Germanic in →Every word from Proto-West Germanic *in →