vacuous

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Definitions from WordNet

Adjective vacuous has 2 senses

asinine, fatuous, inane, mindless, vacuous - complacently or inanely foolish
Antonym: wise (indirect, via foolish)
empty, hollow, vacuous - devoid of significance or point; "empty promises"; "a hollow victory"; "vacuous comments"
Antonym: meaningful (indirect, via meaningless)

Definitions from the Web

Vacuous

Part of Speech: Adjective

Sense 1: Lacking intelligence or substance

Description: Vacuous refers to something or someone devoid of intelligence or substance. It describes a lack of thought, understanding, or meaningful content.

Sample Sentence 1: The vacuous celebrity had no idea about the country she was visiting.

Sample Sentence 2: His speech was vacuous, filled with empty rhetoric and no real substance.

Sense 2: Showing a lack of expression or emotion

Description: Vacuous can also refer to a lack of expression or emotion in a person's face or gaze, often indicating a vacant or blank look.

Sample Sentence 1: She stared at the wall with a vacuous expression, lost in her thoughts.

Sample Sentence 2: The actress played the role of a vacuous, emotionless robot.

Sense 3: Empty or unoccupied

Description: Vacuous can describe something that is empty or unoccupied.

Sample Sentence 1: The room felt vacuous after all the furniture was removed.

Sample Sentence 2: The vacuous parking lot was a stark contrast to its usual crowded state.