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 (n.1), also see rampant). Related: Rampaged; rampaging.
rampage (n.)
1861, from rampage (v.).
ramification
ramify
ramjet
rammy
ramp
rampage
rampancy
rampant
rampart
ramrod
ramshackle