non aptus (unsuitable, unapt; of persons and things); for anything, ad or in aliquid: non idoneus (not serviceable, not proper for a given purpose; of persons and things); for anything, alicui rei, ad aliquid: inutilis alicui rei or (mostly) ad aliquid (not serviceable for a purpose): inhabilis (not manageable,” hence, also, unfit, etc.; of persons or things, alicui rei or ad aliquid): minus commodus: incommodus (inconvenient, unpleasant; e.g., conversation, colloquium): alienus (foreign to, unfavorable, especially of place and time); for or to anybody or anything, alicui or alicui rei, ab aliquo or ab aliqua re: ineptus (unapt, absurd, of things): minime aptus: iners (from laziness, etc.; e.g., unfit for business). Paper unfit for writing on, charta inutilis scribendo. Unfit to be eaten, ad vescendum hominibus non aptus (after Cic., N.D., 2, 64, 160): very unfit for anything, ad or in aliquid alienissimus; for anybody or anything, ab aliquo or ab aliqua re.