In everyday English, disagreement is often a soft brake, not a crash. Keep it short. Keep it calm.
Exactly.
Meaning. You are completely right.
When. When they said the thing you were thinking.
A: So we should leave at six.
B: Exactly.
Absolutely.
Meaning. Yes, 100 percent.
When. Strong yes. Meetings and friends.
A: This is the right call.
B: Absolutely.
I agree.
Meaning. I have the same opinion.
When. Clear and slightly more formal.
A: We need more time.
B: I agree.
That makes sense.
Meaning. Your reason is clear.
When. When you follow the logic, even if you are not excited.
A: The shop closes at five, so we should go now.
B: That makes sense.
I’m not so sure about that.
Meaning. I doubt it. Soft no.
When. When you disagree but want to stay friendly.
A: We can finish this tonight.
B: I’m not so sure about that.
I see your point, but…
Meaning. I heard you. Here is the other side.
When. The most useful disagreement tool.
A: Let’s cancel.
B: I see your point, but we already paid.
I don’t think so.
Meaning. I disagree.
When. Direct. Keep your tone warm.
A: Is this free?
B: I don’t think so.
Fair enough.
Meaning. Okay. I accept that.
When. After they give a reason you respect.
A: I can’t tonight. I have class.
B: Fair enough.
You’ve got a point.
Meaning. That part is true.
When. Partial agreement.
A: The later train is cheaper.
B: You’ve got a point.
No way.
Meaning. I strongly disagree, or I am surprised.
When. Friends. Not a formal meeting.
A: He ran a marathon with no training.
B: No way.