Here are some useful phrases to express a disagreement:

• I’m afraid I can’t agree with you.
• I disagree with you.
• I don’t agree with you.
• I’m not sure I agree with you.
• I think you’re wrong.
• I couldn’t agree with you less.
• You’re absolutely wrong.
• I don’t feel that way at all.
• I don’t think so.
• That’s not right/That’s not true.
• That’s a good point. However…
• That’s not entirely true.
• On the contrary…
• I’m sorry to disagree with you, but…
• I’m sorry but I don’t agree.
• I’m afraid I disagree.
• I’m not sure about that.
• (negative but slightly neutral) I must take issue with you on that.
• (slang) Are you kidding?!
• Not me.

Useful Links

External Links…

• More Expressions for Polite Disagreement