Definitions:

1. Refers to a state of emptiness, lack, or absence of something, often used to describe a void or a space that is devoid of substance or content. NOUN
   • The empty apartment emanated a vacuity that filled her with a sense of loneliness.
2. Something that is silly or has no real meaning or importance. NOUN
   • The vacuity of the painting's composition rendered it devoid of aesthetic appeal.
3. The quality of showing no intelligent throught. NOUN
   • The absence of intellectual stimulation left her mind in a state of vacuity, craving depth and substance.

Synonyms:

• blank
• emptiness
• foolishness
• mindlessness
• senselessness
• vacuum
• void