Meaning : Unrestrained and violent.
							Example : 
							Rampant aggression.
							
Meaning : Rearing on left hind leg with forelegs elevated and head usually in profile.
							Example : 
							A lion rampant.
							
Synonyms : rearing
Meaning : (of a plant) having a lush and unchecked growth.
							Example : 
							A rampant growth of weeds.