airy attenuate attenuated blemished cut damaged defective deficient dilute diluted erroneous ethereal fallible faulty fine flimsy found wanting gaseous immature impaired imperfect imprecise impure inaccurate inadequate incomplete inexact insubstantial lacking makeshift mediocre mixed not perfect off partial patchy rare rarefied reduced short sketchy slight subtile subtle tenuous thin thinned thinned-out uncompact uncompressed undeveloped uneven unfinished unperfected unsound unsubstantial unthorough vaporous wanting watered watered-down windy