crack down on

75 Moby Thesaurus words for "crack down on":
      ambush, asphyxiate, assail, assault, attack, blitz, bottle up,
      bushwhack, censor, choke off, clamp down on, come at, come down on,
      cork, cork up, crush, damp down, descend on, descend upon, drown,
      extinguish, fall on, fall upon, gag, gang up on, go at, go for,
      harry, have at, hit, hit like lightning, hold down, jump, jump on,
      keep down, keep under, kill, land on, lay at, lay hands on,
      lay into, light into, mug, muzzle, pitch into, pounce upon, pound,
      pour water on, quell, quench, repress, sail into, set on, set upon,
      shut down on, silence, sit down on, sit on, smash, smother, squash,
      squelch, stanch, stifle, strangle, strike, stultify, subdue,
      suffocate, suppress, surprise, swoop down on, take the offensive,
      throttle, wade into