ex·clu·sion·ist I. \-zh(ə)nə̇st\noun alsoex·clu·sion·er\-nə(r)\ (-s) Etymology:exclusion + -ist or -er : one who would exclude another from some right or privilege II. adjective 1.: of, relating to, or involving exclusion (as from a right or privilege) < exclusionist policies > 2.of a tariff: designed to reduce competition of foreign goods