Feminine plural of exclusionary: the suffix-or frequently form words to designate an agent or Director of an action, as a salesman, painter, sculptor, however the Academy doesn't support it with all verbs; in some cases supported instead the present participle as in the case of agent, hurtful, lacking or exclusive: which excludes. It also supports Excluder. Therefore the true exclusionary is exclusionary or turtle excluder. The Academy supports also excluded or excluded is the exclude passive participle.