[1] : WordNet (r) 2.0

beat back
     v : cause to move back by force or influence; "repel the enemy";
         "push back the urge to smoke"; "beat back the invaders"
         syn: repel, drive, repulse, force back, push
         back ant: attract
see also:
repel drive repulse force back push back attract 

[2] : Moby Thesaurus II by Grady Ward, 1.0

26 moby thesaurus words for "beat back":
   brush off, chase, chase away, chase off, cut, dismiss, drive away,
   drive back, fend off, hold off, keep off, pack off, push back,
   put back, rebuff, refuse, repel, repulse, send away, send off,
   send packing, snub, spurn, thrust back, turn back, ward off

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