Where does “nonstiff” come from?

nonstiff (English) comes from English non, from French non, from Old French non, from Latin nōn, from Old Latin noenum, from Proto-Indo-European óynos — one; single.

nonstiff (English): Not stiff

Definitions

Not stiff

Ancestry of “nonstiff”, step by step

nonstiff traces back through two separate lines of ancestry.

via English non

Step	Language	Word	Meaning
1	English	non	Obsolete form of none
2	French	non	no; not; a no, a negative response
3	Old French	non	no; not; Alternative form of nom
4	Latin	nōn	not
5	Old Latin	noenum	—
6	Proto-Indo-European	óynos	one; single

via English stiff

Step	Language	Word	Meaning
1	English	stiff	Rigid; hard to bend; inflexible; Inflexible;...
2	Middle English	stif	Stiff, firm, hard; difficult to move or...
3	Old English	stīf	Stiff, firm, hard
4	Proto-West Germanic	stīf	stiff, rigid
5	Proto-Germanic	stīfaz	stiff, rigid
6	Proto-Indo-European	steypós	—

Every word from Proto-Indo-European óynos →Every word from Old Latin noenum →Every word from Latin nōn →