vacuous

/ˈvækjuəs/
adjective
  1. Showing a lack of intelligence or thought; stupid or empty-headed.
    • The politician gave a vacuous speech that said nothing important.
    • She stared at the screen with a vacuous expression, not really paying attention.
    • His vacuous comments during the meeting made everyone wonder if he had prepared at all.
  2. Having no real content, meaning, or value; empty or pointless.
    • He filled his essay with vacuous phrases that sounded impressive but said nothing.
    • Many reality TV shows are entertaining but ultimately vacuous.
    • The movie was full of special effects but had a vacuous plot.