Definition of "difference of opinion" []

• A disagreement or argument about something important (noun)

WordNet. Princeton University. 2010.

• "The difference of opinion probably arises more from different views regarding St. Augustine's doctrine than from different interpretations of Prosper's."
• "Why, he asks, did not Caesar Octavianus solve his difference of opinion with the late Lucius Antonius in a peaceful way?"
• "Internal strife at Seleuceia-on-Tigris had also brought forth a difference of opinion as to how the Romans could be defeated."