plain

apparent appreciable artless austere audible bald bare-bones blank blatant bolder bold broadest broader broad candid certain clean cleanest clear clear-cut clearer clearest common commonest comprehensible conspicuous conventional crashing crystal clear definitive definite demonstrative direct discernible distinct down and dirty dowdy downright dull dull duller duller dry easiest elementary easy easier evident everyday expanses expanse explicit express familiar featureless flat folksy forthright formulaic frank frumpish frumpy genuine grassland gross harder hard homespun homely homely honest household ignoble inarguable inconspicuous incontestable ingenuous insipid intelligible knowable known legible levels level level literal low lucid manifest matter-of-fact meadows meadow meek mere mesa modest more apparent more evident more familiar more modest more legible more known more natural more natural more readable more obvious more open more open more visible more self-explanatory more self-explanatory more self explanatory more self explanatory more selfexplanatory more selfexplanatory more understandable more understandable more self evident more self evident more self-evident more self-evident more selfevident more selfevident more undisputable most apparent most certain most known most noticeable most obvious most self evident most self evident most selfevident most selfevident most restrained most self explanatory most self explanatory most selfexplanatory most selfexplanatory most self-evident most self-evident most self-explanatory most self-explanatory most undisputable mousy natural natural naive naked noticeable obvious open-and-shut open open open and shut/open-and-shut openhearted ordinary outspoken overt palpable patent pellucid perspicuous plainspoken plateaus point-blank plane plateau poor prairies prairie prima facie public pure purest quietest quiet quieter readable restrained round rudimental routine rustic rustic savanna savannahs savanna/savannah savannas savannas seeable see-through self-evident self-evident/self-explanatory self-explanatory sensory simpler simpler simpler simple simple simple sincere sincerest slender slenderer slenderest smooth smoother smoothest sober spartan stark steppe straight-from-the-shoulder straight-shooting straight straight straight-out straightforward straightforward table tangible tasteless transparent transparent ugly unaffected unambiguous unappealing unassailable unassuming unattractive unblended unbounded unconcealed unconspicuous understandable understandable undiluted undiluted undisputable unembellished unembellished unequivocal undistinguished unexceptional unexciting unfinished unmistakable unnoticeable unostentatious unpretentious unrelieved unremarkable unsophisticated unsubtle unvarying used to usual valley valleys vanilla very viewable visible well-defined