vacuous

empty of thought or substance

Roots

-ous / -ious: full of or marked by a quality
vac: empty or free from

Other words with the vac root

vacant: empty or unoccupied
vacuity: emptiness or lack of thought
vacuum: empty space or cleaning machine

Vacuous is empty-headed or empty of real content.

The speech was polished but vacuous.

Open the AstraWords vocabulary map