(a.) Shutting out; precluding, or tending to preclude; hindering.

deterrent deterring discouraging ethnocentric exceptional excluding exclusive exclusory forbidding forestalling inadmissible inhibitive inhibitory insular interdictive interdictory narrow parochial prescriptive preventative preventive prohibiting prohibitive prohibitory prophylactic proscriptive repressive restrictive seclusive segregative select selective separative snobbish suppressive xenophobic