狂奔【きょうほん】
rushing around, running wild
奔走【ほんそう】
running about, making every effort (to do), busying oneself (with), being busily engaged (in), good offices, efforts
奔放【ほんぽう】
wild, uninhibited, extravagant, rampant
東奔西走【とうほんせいそう】
busying oneself about (something), being on the move, bestirring oneself, on the go, taking an active interest
奔流【ほんりゅう】
torrent, rapid stream, violently rushing stream