"sloping one-way road leading off a main highway," 1954, from off- (adj.), from off (prep.), + ramp (n.).

"A rascally, disorderly, or despicable person" [Century Dictionary], 1690s, alteration of rascallion (1640s), a fanciful elaboration of rascal (q.v.). It had a parallel in now-extinct rampallion (1590s), from Middle English ramp (n.2) "ill-behaved woman." Also compare rascabilian (1620s). Rapscallionry "rascals collectively" is marked "[Rare.]" in Century Dictionary (1897); Galsworthy used rapscallionism.

1734, "a piece of lively play," from romp (v.). From 1706 as "a wanton, merry, rude girl," in this sense perhaps a variant of ramp (n.2) suggested by the notion of "girl who indulges in boisterous play."

1778, an arbitrary formation, one of what Farmer describes as "A class of colloquialisms compounded with an intensive prefix" (ram- or rum-), probably suggesting in part rum (adj.) in its old slang sense of "good, fine," and ramp (n.2). In this case apparently suggested by boisterous, robustious, bumptious, etc. Coined about the same time were rumbustical, rambumptious "conceited, self-assertive," rumgumptious "shrewd, bold, rash," rumblegumption, rambuskious "rough," rumstrugenous. Also compare ramshackle, rambunctious.

"rage or storm about," 1715, in Scottish, probably from Middle English verb ramp "rave, rush wildly about" (c. 1300), especially of beasts rearing on their hind legs, as if climbing, from Old French ramper (see ramp (v.), also see rampant). Related: Rampaged; rampaging.

c. 1300, raumpaunt, "standing on the hind legs" (as a heraldic lion often does), thus, also, "fierce, ravenous" (late 14c.), from Old French rampant, rampans, present participle of ramper "to climb, scale, mount" (see ramp (v.)). Sense of "growing without check" (in running rampant), is recorded by 1610s, probably is via the notion of "fierce disposition" or else preserves the older French sense. Related: Rampantly.

1709, "to play rudely and boisterously, sport, frolic," perhaps a variant of ramp (v.); but also see romp (n.). Meaning "to win (a contest) with great ease" is attested by 1888, in early use often in horse-racing. Related: Romped; romping.

"to wrinkle, make uneven," c. 1600, in rumpled, of uncertain origin, perhaps a variant of rimple "to wrinkle" (c. 1400), from Old English hrympel "wrinkle" (possibly influenced by Middle Dutch rumpelen), related to Old English hrimpan "to fold, wrinkle" (see ramp (v.)). Related: Rumpled; rumpling. As a noun from c. 1500, "a wrinkle, a fold."

Also compare Middle English runkle "become wrinkled" (late 14c.), runkel (n.) "a wrinkle" (early 14c.), probably from Old Norse hrukka.