Expostulate
/ɪkˈspɑːstʃəleɪt/
Definition 1 of 1
Pro Tip 1/3Debate Intensity
Used when expressing strong disagreement or challenge, often with passion and persistence. 
She continued to expostulate on the issue, unwilling to accept the decision.
Pro Tip 2/3Archaic Usage
'Expostulate' is not commonly used today; it might sound old-fashioned or overly formal. 
Grandfather was known to expostulate about the decline of today's music.
Pro Tip 3/3Strong Discontent
It implies a deeper level of disagreement than a casual debate, often involving ethical or moral grounds. 
Activists expostulate against injustices to bring about social change.