意見が合わなかった

didn't agree

→ 意見
phrase Rare #24,369
didn't agree Used when two or more people had different opinions. The phrase literally describes their opinions not matching; 意見が合う means “to agree.”
JA: 会議で彼とは意見が合わなかった。
EN: I didn't agree with him at the meeting.

ビルクラス仲間どの問題について意見が合わなかった

Bill couldn't agree with his classmates on any of the issues.