French word grimpeur comes from French -eur, French grimper ((intransitive) to climb, climb up.)

Detailed word origin of grimpeur

Dictionary entry	Language	Definition
-eur	French (fra)	Used to form abstract nouns from adjectives; -ness.. Used to form agent nouns from verbs.
grimper	French (fra)	(intransitive) to climb, climb up.
grimpeur	French (fra)	(climbing) climber (someone who climbs). (cycling) climber (expert in mountainous races). Social climber.

Words with the same origin as grimpeur