You will inveigh against him in the meeting because you are right and he is wrong.
To declaim or rail (against some person or thing); to utter censorious and bitter language; to attack with harsh criticism or reproach, either spoken or written; to use invectives; - - with against; as to inveigh against character, conduct, manners, customs, morals, a law, an abuse.
"All men inveighed against him; all men, except court vassals, opposed him." ~ Milton.
"The artificial life against which we inveighed." ~ Hawthorne.