I. -_rə̇st noun
( -s )
Etymology: French particulariste, from Late Latin particularis particular + French -iste -ist
: an adherent of particularism
II. adjective
1. : of, relating to, or having the characteristics of particularism
particularist … tendencies persisted and seriously complicated national political life — Renzo Sereno
2. : of, relating to, or being a society in which the family unit is individualized