Lacking sense or meaning (often to the point of boredom or annoyance) / Purposeless; pointless

That which is void or empty.

In an inane manner.

plural of inane

plural of inaneness

inanity

comparative form of inane: more inane

(uncountable) The property of being inane, of lacking material of interest or satisfaction, emptiness. / Something that is inane.

plural of inanity

superlative form of inane: most inane