The Collaborative International Dictionary of English v.0.48:

Constrictive \Con*strict"ive\, a.
   Serving or tending to bind or constrict.
   [1913 Webster]

WordNet (r) 3.0 (2006):

constrictive
    adj 1: (of circumstances) tending to constrict freedom [syn:
           constricting, constrictive, narrowing]
    2: restricting the scope or freedom of action [syn: confining,
       constraining, constrictive, limiting, restricting]