C17: from Latin vacuus empty, from vacāre to be empty
vacuous for learners of EnglishPowered by COBUILD (vækjuəs)
graded adjective & adjective
If you describe a person or their comments as vacuous, you are critical of them because they lack intelligent thought or ideas. [disapproval] ⇒ Male models are not always so vacuous as they are made out to be. ⇒ ...the usual vacuous comments by some faceless commentator.
The vacuous smiles and nudging of elbowsproved that he had gotten through to them.Terman, Douglas CORMORANTRejected the chance of dinner with a woman I cared about for an evening out with a vacuous , overdressed china doll.Adam, Paul A NASTY DOSE OF DEATHIn the background I could hear the soundtrack of whatever vacuous Aussie soapoperaSarah was watching.Pritchard, John NIGHT SISTERSAt his vacuous best, Gerrard was chatting amiably with the other man; he wasn't looking at Crowley's face.Stephanie Laurens WHOLE SECRET LOVE