English

Definition of mendacious adjective from the Oxford Advanced Learner's Dictionary

 

mendacious

 adjective
adjective
BrE BrE//menˈdeɪʃəs//
 
; NAmE NAmE//menˈdeɪʃəs//
 
(formal)
 
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not telling the truth synonym lying mendacious press statements Word Origin early 17th cent.: from Latin mendax, mendac- ‘lying’ (related to mendum ‘fault’) + -ious.
See the Oxford Advanced American Dictionary entry: mendacious