rampant

//ˈræmpənt//
C1Frequency Level 10Formal
Visual representation of rampant

Adjective

rampantCanonical form
1

Spreading or growing unchecked; flourishing or occurring in an uncontrolled way, typically with negative connotations.

Corruption is rampant in the government.

2

(Heraldry) Of an animal, especially a lion, depicted standing on one hind leg with the forelegs raised.

The coat of arms features a lion rampant on a red background.