Where does “durance” come from?

Durance comes from Old French durance, formed from the Old French suffix -ance added to Latin duro, meaning to last or endure, itself from the adjective Latin durus meaning hard.

durance (English): Duration; Endurance; Imprisonment; forced...

Definitions

Duration; Endurance; Imprisonment; forced...

Ancestry of “durance”, step by step

Step	Language	Word	Meaning
1	Old French	durance	duration
2	Old French	durer	to last
3	Latin	dūrō	—
4	Latin	dūrus	—
5	Proto-Italic	dūros	—
6	Proto-Indo-European	duh₂-ró-s	long, far
7	Proto-Indo-European	dweh₂-	far; long

Every word from Proto-Indo-European dweh₂- →

durance — Etymology, Origin & Word History | Etymology Explorer