- new aff. a suffix of nouns, often corresponding to verbs ending in -ize or nouns ending in -ism, that denote a person who practices, is expert in, or is concerned with something, or holds certain principles, doctrines, etc.: apologist; machinist; novelist; socialist; ThomistCompare -ism,-istic,-ize•Etymology: ME -iste < L -ista < Gk -istēs; in some words, repr. F -iste, G -ist, It -ista, etc., « L < Gk
From formal English to slang. 2014.