vacuous /ˈvækjəwəs/ adjective Learner's definition of VACUOUS
[more vacuous; most vacuous] formal
: having or showing a lack of intelligence or serious thought : lacking meaning, importance, or substance无意义的;愚蠢的;空洞的 -
a dull and vacuous movie乏味无聊的影片
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vacuous comments/remarks空洞无物的评论/话语
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He had a vacuous expression on his face.他一脸茫然的表情。
— vacuousness
noun [noncount]