Synonyms and related words :
bare, bareness, barrenness, blank, blankness, bleakness, cavity, clear, desolateness, dull, dullness, emptiness, empty, empty-headed, foolish, hollow, hollowness, inane, inanity, nada, nihility, nonexistence, nullity, shallow, silly, stark, stupidity, superficial, vacancy, vacant, vacuous, vacuousness, void, voidness