rampant

originallyRearing on both hind legs with the forelegs extended.

“The Vienna riding school displays splendid rampant movement.”

heraldryRearing up, especially on its hind leg(s), with a foreleg raised and in profile.

architectureTilted, said of an arch with one side higher than the other, or a vault whose two abutments are located on an inclined plane.

Unrestrained or unchecked, usually in a negative manner.

“Weeds are rampant in any neglected garden.”

Rife, or occurring widely, frequently or menacingly.

“There was rampant corruption in the city.”

Rearing on left hind leg with forelegs elevated and head usually in profile

“a lion rampant”

(of a plant) having a lush and unchecked growth

“a rampant growth of weeds”

informalnon-standardRampantly.

“Things seem to be running rampant around here lately.”