"rampant" in the adjective sense
unrestrained and violent
2. rampant, rearing
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"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License