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vacuous

adjective
 
 
/ˈvæk.ju.əs/ formal

Definition

not expressing or showing intelligent thought or purpose: a vacuous remark/question/expression/smileStupid and sillyOf unsound mind vacuously
 
 
/-li/ adverb
Stupid and sillyOf unsound mind
vacuousness
 
 
/-nəs/ noun [U] (also vacuity, /vəˈkjuː.ə.ti/ US  /-ə.t̬i/)
(Definition of vacuous adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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