godan verb (-ru), transitive verb
talk volubly; rattle on; talk a lot
Describes speaking rapidly and at length, often without letting others get a word in. Can imply a one-sided or overwhelming manner of talking.
彼は会議で自分の意見を言いまくった。
He rattled on about his opinions at the meeting.
友達と電話で一
I ended up talking volubly on the phone with a friend for an hour.