godan verb (-ru), intransitive verb
argue vehemently; insist strongly; press one's point
Used when someone argues persistently and forcefully, often in a heated discussion. Intransitive; the person arguing is the subject.
彼は自分の意見を言い募った。
He argued vehemently for his opinion.
会議で彼女は反対意見
She pressed her opposing view at the meeting.