'Rampant' definitions:

Definition of 'rampant'

From: WordNet
adjective
Unrestrained and violent; "rampant aggression"
adjective
Rearing on left hind leg with forelegs elevated and head usually in profile; "a lion rampant" [syn: rampant(ip), rearing]
adjective
(of a plant) having a lush and unchecked growth; "a rampant growth of weeds"

Definition of 'Rampant'

From: GCIDE
  • Rampant \Ramp"ant\ (r[a^]mp"ant), a. [F., p. pr. of ramper to creep. See Ramp, v.]
  • 1. Ramping; leaping; springing; rearing upon the hind legs; hence, raging; furious. [1913 Webster]
  • The fierce lion in his kind Which goeth rampant after his prey. --Gower. [1913 Webster]
  • [The] lion . . . rampant shakes his brinded mane. --Milton. [1913 Webster]
  • 2. Ascending; climbing; rank in growth; exuberant. [1913 Webster]
  • The rampant stalk is of unusual altitude. --I. Taylor. [1913 Webster]
  • 3. (Her.) Rising with fore paws in the air as if attacking; -- said of a beast of prey, especially a lion. The right fore leg and right hind leg should be raised higher than the left. [1913 Webster]
  • Rampant arch. (a) An arch which has one abutment higher than the other. (b) Same as Rampant vault, below.
  • Rampant gardant (Her.), rampant, but with the face turned to the front.
  • Rampant regardant, rampant, but looking backward.
  • Rampant vault (Arch.), a continuous wagon vault, or cradle vault, whose two abutments are located on an inclined plane, such as the vault supporting a stairway, or forming the ceiling of a stairway. [1913 Webster]

Synonyms of 'rampant'

From: Moby Thesaurus