Definitions:

1. Indicative of or marked by mental emptiness and an absence of ideas NOUN
   • Her vacuousness in conversation made it difficult to discuss anything meaningful.
   • The vacuousness of their face belied their feelings.
2. Refers to something that is empty, meaningless, or inane. NOUN
   • The politician's speech was filled with vacuousness, devoid of any meaningful substance.
3. Refers to the quality of being vacuous, meaning a state of being empty, lacking in ideas or intelligence, or devoid of meaningful content. NOUN
   • The vacuousness of his argument was apparent to everyone in the room.
4. Refers to the state of being devoid of matter or signifying nothing. NOUN
   • Despite its flashy presentation, the report's vacuousness was evident upon closer examination.
5. The quality of lacking substance, depth, or intelligence. NOUN
   • The vacuousness of the television show left viewers feeling unsatisfied.

Synonyms:

• barrenness
• blankness
• emptiness
• hollowness
• inanity
• vacancy
• vacuity