aff. a suffix occurring in loanwords from Latin, orig. adjectival derivatives of agent nouns ending in-tor (predatory); also forming adjectival derivatives directly from verbs (obligatory).•Etymology: < L -tōrius II-toryaff. a suffix occurring in loanwords from Latin, usu. derivatives from agent nouns ending in -tor or directly from verbs, denoting a place or object appropriate for the activity of the verb:dormitory; repository[/ex]•Etymology: < L -tōrium, n. use of neut. of -tōrius -tory I
From formal English to slang. 2014.