Use 'vacuous' to describe remarks or actions that have no deeper meaning or value. The movie was filled with vacuous dialogue that failed to advance the plot.
Pro Tip 2/3
Not Just Empty
'Vacuous' implies emptiness that can be seen as mindless or superficial. Despite the celebratory atmosphere, his laughter seemed vacuous.
Pro Tip 3/3
Sarcasm and Criticism
It can be used sarcastically to criticize something as lacking depth. Her vacuous response to the tragedy shocked everyone.