I disagree vs I don’t think

When to use each in English, with meaning, register, and examples.

I disagree

Top 2,000 (common)

I don’t think

Top 2,000 (common)
 I disagreeI don’t think
Pronunciation🇬🇧 //aɪ dɪsəˈɡriː//🇺🇸 //aɪ dɪsəˈɡri//🇬🇧 //aɪ doʊnt θɪŋk//🇺🇸 //aɪ doʊnt θɪŋk//
MeaningI do not agree.A phrase used to express doubt or disagreement.
ExampleI disagree with your assessment of the situation.I don’t think it will rain today.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
Collocationsstrongly disagree, politely disagree, publicly disagreeI don't think so, I don't think it's necessary, I don't think that's right, I don't think they will agree, I don't think we should
Common mistakesSaying 'I not agree' instead of 'I disagree'., Confusing 'disagree' with 'differ' in context., Using 'I disagree' without explaining why.Omitting 'I' before 'don't think', Using 'think' without 'don't' to express doubt, Incorrectly placing the phrase in a sentence
Usage notesUse 'I disagree' to express a different opinion. It's polite but can be direct. Avoid in very formal situations.Use this phrase to express uncertainty or disagreement. It is commonly used in conversations and can be followed by various clauses. It should be avoided in very formal writing.

See it in real clips

I disagree
I don’t think

Frequently asked questions: I disagree vs I don’t think

What's the difference between I disagree and I don’t think?

I disagree: I do not agree. I don’t think: A phrase used to express doubt or disagreement.

Can you show an example of each?

I disagree: I disagree with your assessment of the situation. I don’t think: I don’t think it will rain today.

Can I use I disagree and I don’t think interchangeably?

Not always. I disagree and I don’t think are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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