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general::
Phrase(s): differ (with someone) about something [and] differ (with someone) on something
1. [for someone] to disagree with someone about something. • I must differ with you about that. • We differ about that. • I don’t differ with you on that point. 2. [for someone] to argue with someone about something. • Tom was differing with Terry rather loudly about which one of them was going to carry the flag. • Let’s stop differing with each other on these simple things!
McGrawhill's American Idioms And Phrasal Verbs