Defn: To leap or prance about, as an animal; to be violent; to rage.
[Prov. or Low]

RAMPAGEOUS
Ram*pa"geous, a.

Defn: Characterized by violence and passion; unruly; rampant. [Prov.
or Low]
In the primitive ages of a rampageous antiquity. Galt.

RAMPALLIAN
Ram*pal"lian, n. Etym: [Cf. ramp a prostitute, or rabble.]

Defn: A mean wretch. [Obs.] Shak.

RAMPANCY
Ramp"an*cy, n.

Defn: The quality or state of being rampant; excessive action or development; exuberance; extravagance. "They are come to this height and rampancy of vice." South.

RAMPANT
Ramp"ant, a. Etym: [F., p. pr. of ramper to creep. See Ramp, v.]

1. Ramping; leaping; springing; rearing upon the hind legs; hence,
raging; furious.
The fierce lion in his kind Which goeth rampant after his prey.
Gower.
[The] lion . . . rampant shakes his brinded mane. Milton.

2. Ascending; climbing; rank in growth; exuberant. The rampant stalk is of unusual altitude. I. Taylor.