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