plain

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