Where does “danksome” come from?

danksome (English) comes from English some, from Middle English som, from Old English sum, from Proto-West Germanic *sum, from Proto-Germanic sumaz, from Proto-Indo-European sem- — together, one.

danksome (English): Characterised or marked by dankness

Definitions

Characterised or marked by dankness

Ancestry of “danksome”, step by step

danksome traces back through two separate lines of ancestry.

via English some

Step	Language	Word	Meaning
1	English	some	A certain number, at least two; An indefinite...
2	Middle English	som	some
3	Old English	sum	some
4	Proto-West Germanic	*sum	some
5	Proto-Germanic	sumaz	some (one), a certain (one)
6	Proto-Indo-European	sem-	together, one

via English dank

Step	Language	Word	Meaning
1	English	dank	Dark, damp and humid; Highly potent; Great,...
2	Middle English	danke	wet, damp; dampness, moisture

Every word from Proto-Indo-European sem- →Every word from Proto-Germanic sumaz →Every word from Proto-West Germanic *sum →