- aff. a suffix appearing in loanwords from Greek, where it was used to form action nouns from verbs (baptism); on this model, used as a productive suffix in the formation of nouns denoting action or practice, state or condition, principles, doctrines, a usage or characteristic, devotion or adherence, etc.: Darwinism; despotism; plagiarism; realism; witticismCompare -ist,-ize•Etymology: < Gk -ismos, -isma
From formal English to slang. 2014.