expression, godan verb (-ru)
to reach an agreement; to come to a consensus
Used when a group's opinions converge into a unified decision or view.
会議で意見がまとまった。
We reached an agreement at the meeting.
なかなか意見がまとまらない。
We just can't seem to agree.
Standard kanji spelling for this phrase.
Rare kanji spelling using 纏; まとまる is usually written in kana.
意見が合う means opinions match or are compatible, while 意見がまとまる emphasizes the process of reaching a unified conclusion.
Phrase composed of 意見 (opinion) + が + まとまる (to be collected, to be settled). The verb まとまる is a native Japanese word.