1. restrictive (vs. unrestrictive), confining, constraining, constrictive, limiting, restricting, inhibitory, repressive, repressing, limiting, regulative, regulatory, sumptuary, suppressive

usage: serving to restrict; "teenagers eager to escape restrictive home environments"

2. restrictive, protective (vs. unprotective)

usage: (of tariff) protective of national interests by restricting imports

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See also: restrictive (Dictionary)