(a.) Not conspicuous or noticeable; hardly discernible.

blear bleared bleary blurred blurry confused dark dim discreet faint feeble filmy foggy fuzzy half-seen half-visible hazy ill-defined indefinite indistinct indistinguishable insignificant low-profile merely glimpsed misty modest obscure out of focus pale semivisible shadowy unassuming uncertain unclear undefined undistinguished unemphatic unnoticeable unnoticed unobtrusive unostentatious unplain unrecognizable vague weak