inane

adjective

Lacking sense or substance.

Empty; void; especially, void of sense or intelligence; senseless; silly.

Synonyms Frivolous, puerile, trifling.

noun

That which is void or empty; void space; emptiness; vacuity.

adjective

Without contents; empty; void of sense or intelligence; purposeless; pointless; characterless; useless.

noun

That which is void or empty.

adjective

Lacking sense or meaning (often implying, “to the point of boredom or annoyance“).

noun

That which is void or empty.

adjective

devoid of intelligence