Synonyms of vacuous

1 Syllable

blank, dumb, void, dull

2 Syllables

silly, sillier, duller, blankest, foolish, fatuous, goalless, vapid, voiding, stupid, emptied, blanker, voider, drained, shallow, dullest, empty, emptiest, vacant, minus, emptier, silliest

3 Syllables

birdbrained, inanest, half-baked, stuporous, unblocked, inane, masklike, unhelpful, airheaded

4 Syllables

lamebrained, muddleheaded, unfurnished, empty-headed, purposeless, unreasoning, motiveless, non-existent, unimpeded, pokerfaced, superficial, milk-and-water, undirected, expressionless

5 Syllables

unreflective, uncomprehending