preclusive (adj.)

• deterrent
• discouraging
• ethnocentric
• exceptional
• exclusive
• forbidding
• inadmissible
• inhibitory
• insular
• narrow
• parochial
• prescriptive
• preventative
• preventive
• prohibitive
• prohibitory
• prophylactic
• repressive
• restrictive
• select
• selective
• separative
• snobbish
• suppressive
• xenophobic