The Collaborative International Dictionary of English v.0.48:

Restrictive \Re*strict"ive\, a. [Cf. F. restrictif.]
   [1913 Webster]
   1. Serving or tending to restrict; limiting; as, a
      restrictive particle; restrictive laws of trade.
      [1913 Webster]

   2. Astringent or styptic in effect. [Obs.] --Wiseman.
      [1913 Webster] --Re*strict"ive*ly, adv. --
      Re*strict"ive*ness, n.
      [1913 Webster]

WordNet (r) 3.0 (2006):

restrictive
    adj 1: serving to restrict; "teenagers eager to escape
           restrictive home environments" [ant: unrestrictive]
    2: (of tariff) protective of national interests by restricting
       imports

Moby Thesaurus II by Grady Ward, 1.0:

67 Moby Thesaurus words for "restrictive":
   altering, assuasive, bounding, choking, confining, constrictive,
   contrary, counterproductive, cramping, crosswise, defining,
   definitive, ethnocentric, exceptional, excluding, exclusive,
   exclusory, extenuating, extenuatory, hindering, hindersome,
   in the way, inadmissible, inhibiting, inhibitive, insular,
   interrupting, interruptive, lenitive, limitary, limitative,
   limiting, mitigating, mitigative, mitigatory, modificatory,
   modifying, modulatory, narrow, narrowing, obstructing, obstructive,
   obstruent, occlusive, palliative, parochial, preclusive,
   prescriptive, preventive, prohibitive, qualificative,
   qualificatory, qualifying, repressive, restricting, seclusive,
   segregative, select, selective, separative, snobbish, softening,
   stifling, strangling, suppressive, troublesome, xenophobic