| 单词 | vacuous | 
| 释义 | Word Frequency vacuous(ˈvækjʊəs) adjective 1.  containing nothing; empty  2.  bereft of ideas or intelligence; mindless  3.  characterized by or resulting from vacancy of mind   a vacuous gaze 4.  indulging in no useful mental or physical activity; idle  5.  logic, mathematics (of an operator or expression) having no import; idle: in (x) (John is tall) the quantifier  (x) is vacuous Derived forms vacuously (ˈvacuously) adverb vacuousness (ˈvacuousness)  noun Word origin C17: from Latin vacuus empty, from vacāre to be empty | 
	
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