Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

576. Plainness — N. plainness &c adj.; simplicity, severity; plain

terms, plain English; Saxon English; household words V. call a spade 'a spade'; plunge in medias res; come to the point. Adj. plain, simple; unornamented, unadorned, unvarnished; homely, homespun; neat; severe, chaste, pure, Saxon; commonplace, matter-of- fact, natural, prosaic. dry, unvaried, monotonous &c 575. Adv. in plain terms, in plain words, in plain English, in plain common parlance; point-blank.