- -nik -nik (n[i^]k) suff. [Yiddish, fr. Slavik suffix -nik indicating a person.] A suffix attached to other words indicating a person with certain characteristics or associated with a certain group or behavior; as, beatnik, kibbutznik; it is sometimes used derogatorily; as in no-goodnik, peacenik. [PJC]
The Collaborative International Dictionary of English. 2000.