strikebreaker

from WordNet (r) 3.0 (2006)

strikebreaker
    n 1: someone who works (or provides workers) during a strike
         [syn: {scab}, {strikebreaker}, {blackleg}, {rat}]

from Moby Thesaurus II by Grady Ward, 1.0

33 Moby Thesaurus words for "strikebreaker":
      apostate, backslider, blackleg, bolter, collaborationist,
      collaborator, convert, defector, deserter, fifth columnist, fink,
      mugwump, proselyte, quisling, rat, recidivist, recreant, renegade,
      renegado, renegate, reversionist, runagate, scab, schismatic,
      seceder, secessionist, separatist, tergiversant, tergiversator,
      traitor, turnabout, turncoat, turntail