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specious

adjective
 
 
/ˈspiː.ʃəs/ formal disapproving

Definition

seeming to be right or true, but really wrong or false: a specious argument/claim specious allegations/promisesWrong speciously
 
 
/-li/ adverb
speciousness
 
 
/-nəs/ noun [U]
(Definition of specious adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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