Sentence:  Grenville seized the opportunity to <WSD>declaim</WSD> on the repeal of the stamp act. 
Meaning of the word marked with <WSD> tags:  To recite, e.g., poetry, in a theatrical way; to speak for rhetorical display; to speak pompously, noisily, or theatrically; bemouth; to make an empty speech; to rehearse trite arguments in debate; to rant.