Bad vs Poor

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

Bad

Top 1,000 (very common)A1adjective

Poor

Top 1,000 (very common)A1
 BadPoor
Pronunciation🇬🇧 /["/bæd/","/wɜːs/","/wɜːst/"]/🇺🇸 /["/bæd/","/wɜːrs/","/wɜːrst/"]/🇬🇧 /["/pɔː(r)//pʊə(r)/"]/🇺🇸 /["/pʊr//pɔːr/"]/
Meaningnot good or harmfulHaving little money or resources
ExampleThat was a bad performance by the team.She is in a poor condition after the accident.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelA1A1
Part of speechadjective
Collocationsbe, 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 badpoor health, poor quality, poor performance
Antonymsgood, excellent, positiverich, wealthy, affluent
Common mistakesUsing '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.Confused with 'pore' (the skin opening), Using 'poor' as a noun (should use 'the poor'), Saying 'poorness', which is not standard
Usage notesUse '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'.Use 'poor' to describe someone lacking money or in bad conditions. Avoid using it in formal reports where 'underprivileged' might be more suitable.

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Bad

Frequently asked questions: Bad vs Poor

What's the difference between Bad and Poor?

Bad: not good or harmful Poor: Having little money or resources

Are Bad and Poor the same CEFR level?

Bad: A1, Poor: A1 on the CEFR scale.

Can I use Bad and Poor interchangeably?

Not always. Bad and Poor 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.