From French rampe, from Middle French rampe, deverbal of ramper, from Old French ramper (“to crawl, climb, scale up”), from Frankish *hrampōn (“to contract oneself, wrinkle, rumple, crumple, curve”), from Proto-Germanic *hrimpaną (“to shrivel, shrink”). Cognate with German Rampf (“retraction, curvature, shrinkage, spasm”). Doublet of romp.

Akin also to Old English hrimpan (“to wrinkle, rimple, rumple”), Old High German rimpfan (German rümpfen (“to wrinkle up”)). Compare Danish rimpe (“to fold" (archaic), "to baste”), Icelandic rimpa. More at rimple.

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From Middle Dutch ramp (“misfortune”). Related to rimpel (“wrinkle”). In the 19th century, the grammatical gender of the word was a matter of debate. It was finally standardized as feminine, departing from its historical masculine gender.