suppressive

from WordNet (r) 3.0 (2006)

suppressive
    adj 1: tending to suppress; "the government used suppressive
           measures to control the protest"

from The Collaborative International Dictionary of English v.0.48

Suppressive \Sup*press"ive\, a.
   Tending to suppress; subduing; concealing.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

67 Moby Thesaurus words for "suppressive":
      absolute, absolutist, absolutistic, arbitrary, aristocratic,
      arrogant, authoritarian, authoritative, autocratic, bossy, choking,
      constraining, constrictive, contrary, counterproductive, crosswise,
      despotic, dictatorial, domineering, exclusive, feudal, forbidding,
      grinding, high-handed, hindering, hindersome, imperative, imperial,
      imperious, in the way, inhibiting, inhibitive, inhibitory,
      interdictive, interdictory, interrupting, interruptive, lordly,
      magisterial, magistral, masterful, monocratic, obstructing,
      obstructive, obstruent, occlusive, oppressive, overbearing,
      overruling, peremptory, preclusive, preventive, prohibiting,
      prohibitive, prohibitory, proscriptive, repressive, restraining,
      restrictive, severe, stifling, strangling, strict, stultifying,
      troublesome, tyrannical, tyrannous