Cool MateBad vs No good
When to use each in English, with meaning, register, and examples.
Bad
Top 1,000 (very common)A1adjective
No good
InformalTop 3,000 (common)
Most formal: BadMost common: Bad
| Bad | No good | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/bæd/","/wɜːs/","/wɜːst/"]/🇺🇸 /["/bæd/","/wɜːrs/","/wɜːrst/"]/ | 🇬🇧 //nəʊ ɡʊd//🇺🇸 //noʊ ɡʊd// |
| Meaning | not good or harmful | Not acceptable or useful. |
| Example | That was a bad performance by the team. | This plan is no good; we need to rethink it. |
| Register | Neutral | Informal |
| How common | Top 1,000 (very common) | Top 3,000 (common) |
| CEFR level | A1 | - |
| Part of speech | adjective | |
| Collocations | be, look, sound, extremely, fairly, very, at, for, not half bad, be, look, sound, extremely, fairly, very, at, for, not half bad, be, look, sound, extremely, fairly, very, at, for, not half bad, be, look, smell, feel, extremely, fairly, very, about, be, look, sound, extremely, fairly, very, at, for, not half bad | no good at all, no good for something, feel no good, it's no good, no good reason |
| Antonyms | good, excellent, positive | - |
| Common mistakes | Using 'bad' instead of 'badly' as an adverb: e.g., 'He performed bad' instead of 'He performed badly'., Confusing 'bad' with 'ill' when referring to health. 'Ill' is usually used in formal contexts., Saying 'more bad' instead of 'worse' for comparative form. | Overusing it in formal writing or speech., 'No good' mistaken for 'not good', which is more common., Using it without context, making the meaning unclear. |
| Usage notes | Use 'bad' to describe something that is of poor quality or morally wrong. It's generally appropriate in everyday conversation but can be too informal in professional settings. In formal writing, consider alternatives such as 'unfavorable' or 'detrimental'. | Typically used to express dissatisfaction or disapproval. It's informal and may not be suitable in formal settings. |
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Frequently asked questions: Bad vs No good
What's the difference between Bad and No good?
Bad: not good or harmful No good: Not acceptable or useful.
Which is more formal: Bad and No good?
Bad is the most formal of these.
Which is more common: Bad and No good?
Bad is the most common in everyday English.
Can you show an example of each?
Bad: That was a bad performance by the team. No good: This plan is no good; we need to rethink it.
Can I use Bad and No good interchangeably?
Not always. Bad and No good 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.