plain

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