Synonyms for Confining (same or very similar meaning)
WordNet sense 1 (restricting the scope or freedom of action):
constrictive, limiting, constraining, restrictingWordNet sense 2 (serving to restrict):
restrictiveWordNet sense 3 (crowded):
closeWordNet sense 4 (not free to move about):
confinedFrom the ODE community, based on WordNetadd/edit