to speak aloud in an oratorical manner; make a formal speech

Brutus declaimed from the steps of the Roman senate building.

to inveigh (usually fol. by against )

He declaimed against the high rents in slums.

to speak or write for oratorical effect, as without sincerity or sound argument.

to utter aloud in an oratorical manner

to declaim a speech.

verb

attack , bloviate , blow hot air , declare , decry , denounce , harangue , hold forth , inveigh , lecture , mouth , orate , perorate , pile it on , proclaim , rail , rant , recite , soapbox , speak , spiel * , spout * , talk big , rave , attach , pontificate