Definition of sententious adjective from the Oxford Advanced American Dictionary

 

sententious

 adjective
adjective
NAmE//sɛnˈtɛnʃəs//
 
(formal)(disapproving)
 
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trying to sound important or intelligent, especially by expressing moral judgments sententious remarks
sententiously
 
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adverb “It's never easy to serve two masters,” he said sententiously.
See the Oxford Advanced Learner's Dictionary entry: sententious