The Collaborative International Dictionary of English v.0.48:

Repressive \Re*press"ive\ (r?-pr?s"?v), a. [Cf. F. r['e]pressif.
   LL. repressivus.]
   Having power, or tending, to repress; as, repressive acts or
   measures. -- Re*press"ive*ly, adv.
   [1913 Webster]

WordNet (r) 3.0 (2006):

repressive
    adj 1: restrictive of action; "a repressive regime"; "an overly
           strict and inhibiting discipline" [syn: inhibitory,
           repressive, repressing]

Moby Thesaurus II by Grady Ward, 1.0:

69 Moby Thesaurus words for "repressive":
   absolute, absolutist, absolutistic, arbitrary, aristocratic,
   arrogant, authoritarian, authoritative, autocratic, bossy, brutal,
   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,
   restraining, restrictive, severe, stifling, strangling, strict,
   stultifying, suppressive, totalitarian, troublesome, tyrannical,
   tyrannous