Cool MateDefinitely vs No doubt about it
When to use each in English, with meaning, register, and examples.
Definitely
Top 1,000 (very common)A2adverb
No doubt about it
Beyond 10,000 (less common)
Most common: Definitely
| Definitely | No doubt about it | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/ˈdefɪnətli/"]/🇺🇸 /["/ˈdefɪnətli/"]/ | 🇬🇧 //nəʊ daʊt əˈbaʊt ɪt//🇺🇸 //noʊ daʊt əˈbaʊt ɪt// |
| Meaning | For sure, without a doubt | It is certain. |
| Example | I definitely remember sending the letter. | She is, no doubt about it, the best candidate for the job. |
| Register | Neutral | Neutral |
| How common | Top 1,000 (very common) | Beyond 10,000 (less common) |
| CEFR level | A2 | - |
| Part of speech | adverb | |
| Collocations | definitely agree, definitely believe, definitely know | have no doubt about it, leave no doubt about it, there's no doubt about it |
| Antonyms | doubtfully, uncertainly | - |
| Common mistakes | Often confused with 'defiantly' which means resisting authority., Sometimes spelled incorrectly as 'definately'. | Using in overly formal contexts where simpler affirmatives are better., Confusing with phrases like 'no question about it' which can imply more uncertainty., Mispronouncing and rushing, making it sound unclear. |
| Usage notes | Use 'definitely' to emphasize certainty. It fits well in both spoken and written English. Avoid using it in overly formal contexts where alternatives like 'certainly' might be more suitable. | This phrase is often used in informal conversation to express certainty. It's suitable for most contexts but can be avoided in very formal writing. |
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Frequently asked questions: Definitely vs No doubt about it
What's the difference between Definitely and No doubt about it?
Definitely: For sure, without a doubt No doubt about it: It is certain.
Which is more common: Definitely and No doubt about it?
Definitely is the most common in everyday English.
Can you show an example of each?
Definitely: I definitely remember sending the letter. No doubt about it: She is, no doubt about it, the best candidate for the job.
Can I use Definitely and No doubt about it interchangeably?
Not always. Definitely and No doubt about it 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.