assailing, assaulting, attacking, besetting, bushwhacking, charging, descending (on or upon), going in (on), jumping (on), pouncing (on or upon), raiding, rushing, setting on, storming, striking, trashing, turning (on)

bum-rushing, ganging up (on), mobbing, swarmingmugging, robbingambuscading, ambushing, surprising(also surprizing), waylayingblitzing, bombarding, bombing, nukingbarraging, cannonading, cannoningbanging away (at), battering, buffeting, plasteringbeleaguering, besieging, pressingharrying, looting, pillaging, plundering, ravaging, sackingforaying, invading, overrunningenveloping, flanking

beating up on, flying at, going at, lighting into, pitching into, rounding on, setting at, setting upon, tearing into