Synonyms and related words :
Spartan, articulate, artless, ascetic, austere, bald, bare, bluff, blunt, broad, brusque, candid, common, commonplace, direct, downright, dry, dull, eloquent, explicit, forthright, frank, frankhearted, free, free hand, free-acting, free-going, free-moving, free-speaking, free-spoken, free-tongued, freehanded, genuine, heart-to-heart, homely, homespun, ingenuous, lean, loud-speaking, loud-spoken, matter-of-fact, natural, neat, open, openhearted, outspoken, plain, plain-speaking, prosaic, prosing, prosy, pure, round, rustic, severe, simple, simple-speaking, sincere, sober, soft-speaking, soft-spoken, spare, speaking, stark, straight, straight-out, straightforward, talkative, talking, transparent, true-speaking, unadorned, unaffected, unchecked, unconstrained, unequivocal, unguarded, unimaginative, unpoetical, unreserved, unrestrained, unvarnished, well-spoken