Attic, Ciceronian, Mickey Mouse, Spartan, aboveboard, apparent, artless, ascetic, austere, bald, bare, barefaced, bluff, blunt, broad, brusque, candid, casual, chaste, classic, clean-cut, clear-cut, clear, clear as crystal, clear as day, coherent, common, commonplace, connected, consistent, crisp, crystal-clear, crystalline, cushy, dead, dead ahead, defined, definite, direct, directly, distinct, downright, dry, due, due north, dull, easy, easy as pie, effortless, elegant, evident, explicit, express, facile, finished, forthright, frank, frankhearted, free-speaking, free-spoken, free-tongued, free, genuine, glib, graceful, gracile, heart-to-heart, homely, homespun, honest, honorable, immediate, in a beeline, in line with, inartificial, incomplex, ingenuous, irreversible, just, lean, light, limpid, loud and clear, lucid, luminous, manifest, matter-of-fact, native, natural, neat, nothing to it, one-way, open, openhearted, outspoken, painless, palpable, patent, pellucid, perspicuous, plain-speaking, plain-spoken, plain, plain dealing, polished, prosaic, prosing, prosy, pure, refined, restrained, right, round, rustic, severe, simple-speaking, simple, simple as ABC, sincere, smooth, sober, soft, spare, stark, straight-out, straight, straight across, straight ahead, straightaway, straightforwards, straightly, straightway, tasteful, terse, through, translucent, transparent, transpicuous, trim, unadorned, unaffected, unambiguous, unartificial, unassuming, unbroken, unburdensome, unchecked, uncomplicated, unconcealed, unconfused, unconstrained, undeviating, undeviatingly, undisguised, undissembled, undissembling, unequivocal, unfeigning, unguarded, unidirectional, unimaginative, uninterrupted, uninvolved, univocal, unlabored, unmistakable, unpoetical, unpretending, unpretentious, unreserved, unrestrained, unswerving, unswervingly, unvarnished, unveeringly, upright, upstanding, well-defined