pontificate - definition and synonyms

verb [intransitive] formal 

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/pɒnˈtɪfɪkeɪt/
present tense
I/you/we/theypontificate
he/she/itpontificates
present participlepontificating
past tensepontificated
past participlepontificated
  1. to give your opinions in a way that shows you think you are definitely right, especially when this annoys other people