plain

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