Not interested vs Thanks but no

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

Not interested

InformalTop 2,000 (common)

Thanks but no

InformalCommon idiom
Most common: Not interested
 Not interestedThanks but no
Pronunciation🇬🇧 //nɒt ˈɪntrəstɪd//🇺🇸 //nɑt ˈɪntrəstɪd//🇬🇧 //θæŋks bʌt nəʊ//🇺🇸 //θæŋks bʌt noʊ//
MeaningDon't want to know or be involved.I appreciate it, but I don't want it.
ExampleWhen he asked if I wanted to join the club, I replied that I was not interested.I really value your advice, but thanks but no.
RegisterInformalInformal
How commonTop 2,000 (common)Common idiom
Collocationsclearly not interested, not interested at all, seem not interested, generally not interested, not interested inthanks but no, thanks but no thanks, just say thanks but no
Common mistakesUsing it in a formal conversation where politeness is needed., Confusing it with 'not interested in' when specifying a subject., Overusing it when a softer response is more appropriate.Use it in very formal contexts where a more polite phrase is needed., Overuse it in situations where a detailed explanation might be better., Assume everyone understands it, leading to possible confusion.
Usage notesUsed in casual conversations to express disinterest. Avoid in formal situations. Can be blunt.Used in casual conversation to politely decline an offer or invitation. It's friendly but may sound dismissive in very formal situations.

See it in real clips

Not interested
Thanks but no

Frequently asked questions: Not interested vs Thanks but no

What's the difference between Not interested and Thanks but no?

Not interested: Don't want to know or be involved. Thanks but no: I appreciate it, but I don't want it.

Which is more common: Not interested and Thanks but no?

Not interested is the most common in everyday English.

Can you show an example of each?

Not interested: When he asked if I wanted to join the club, I replied that I was not interested. Thanks but no: I really value your advice, but thanks but no.

Can I use Not interested and Thanks but no interchangeably?

Not always. Not interested and Thanks but no 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.