i Register
In some senses, vacant is marked as rare. Watch for register when choosing this word.
adj
Not occupied; empty.
a vacant room
a vacant consulate
Not present; absent.
And Pierre felt that never, never would he be able to embrace Isabel with the mere brotherly embrace; while the thought of any other caress, which took hold of any domesticness, was entirely vacant from his uncontaminated soul, for it had never consciously intruded there.
Blank.
a vacant page
Showing no intelligence or interest.
a vacant stare
a vacant look in her eyes