characteristic of informal spoken language or conversation; "wrote her letters in a colloquial style"; "the broken syntax and casual enunciation of conversational English"
uttered through the medium of speech or characterized by speech; sometimes used in combination; "a spoken message"; "the spoken language"; "a soft-spoken person"; "sharp-spoken"
not characteristic of or befitting a profession or one engaged in a profession; "described in unprofessional language so that high school students could understand it"; "was censured for unprofessional conduct"; "unprofessional repairs"