• barbarously, furiously, rampageously, scone-hot, severely, to romp, to run riot, truculently, wildly
• to bolt, to go berserk, to grow savage, to run riot
• to break loose, to cut loose, to get loose, to get off, to get out of control, to get out of hand, to slip its chain
• to disengage, to get free, to get out
• loose, maverick, runaway
• to be quit of, to dispose, to make a clear sweep of sg, to shake off, to throw off, to unload