French word vieillesse comes from French -esse, French vielle ((musical instruments) vielle, hurdy-gurdy.)

Detailed word origin of vieillesse

Dictionary entry	Language	Definition
-esse	French (fra)	-ess (female form) Used to form nouns describing the condition of being something (-ness, -ity, etc.).
vielle	French (fra)	(musical instruments) vielle, hurdy-gurdy.
vieillesse	French (fra)	Old age. Oldness.

Words with the same origin as vieillesse