plain

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