rampant; unruly; running wild or breaking out in a fierce and unbridled way

savage and unbridled; acting in a wild, arrogant, or unrestrained manner

describes a situation that is chaotic, wild, or disorderly; often refers to the rampaging behavior of outlaws or rebels

wild and severe; mad and violent

act exactly as one pleases or behave wildly and without restraint

wild and hurried; rushing in a confused or reckless manner.

(variant form) to be defeated, to meet with ruin, or to fail in an undertaking