adjective. undefined

adjective. Lacking intelligence; stupid or empty-headed.

adjective. Devoid of substance or meaning; vapid or inane.

adjective. Devoid of expression; vacant: synonym: empty.

adjective. Lacking serious purpose or occupation; idle.

adjective. Devoid of matter; empty.

Empty; unfilled; void; vacant.

Without intelligence or intelligent expression; unexpressive; showing no intelligence: as, a vacuous look.

adjective. Empty; unfilled; void; vacant.

adjective. Lacking meaningful content.

adjective. Showing a lack of thought or intelligence; vacant

adjective. devoid of intelligence

adjective. devoid of matter

adjective. devoid of significance or point

adjective. void of expression

"Furthermore, labeling your argument vacuous is a condemnation of your argument, not of you."

empty  foolish  incommunicative  meaningless  nonmeaningful  

vacuity  vacuously  vacuousness  

bemused  carefree  colloquial  crestfallen  derogatory  

airy  asinine  awkward  bare  barren