1. without contents; empty: the vacuous air.
2. lacking in ideas or intelligence: a vacuous mind.
3. expressing or characterized by a lack of ideas or intelligence; inane; stupid: a vacuous book.
4. purposeless; idle: a vacuous way of life.
"languages can be vacuous to somes."
"terms can be vacuous."
"rattlings can be vacuous."
"people can be vacuous."
"looks can be vacuous."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.