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but
/bət/
contrast conjunction
I wanted to go, but it rained.
This sentence uses 'but' to contrast the desire to go with the reality of rain.
general
Used to introduce a contrast or exception to what has been said previously
She is smart but lazy.
The word 'but' shows a contrast between being smart and lazy.
I like tea, but not coffee.
'But' introduces an exception to the preference for tea.
Can also function as a preposition meaning 'except' or an adverb meaning 'only'.
informal
Only; no more than
He's but a child.
'But' here means 'only', emphasizing the child's young age.
Often used in literary or formal contexts.
Related Phrases
Pro Tip
Avoid double negatives
When using 'but' in negative sentences, ensure the meaning remains clear. For example, 'I don’t like but chocolate' is incorrect; 'I don’t like chocolate but I like cake' is correct.
Gold Rule
Contrast with 'and'
Use 'but' to show contrast, not agreement. 'She is tall and short' is incorrect; 'She is tall but short' is still awkward—better: 'She is tall but not very tall.'
Word Origin
Old English 'butan' (by outside, except), from 'be' (by) + 'ūtan' (out). Originally meant 'outside' or 'except', later evolving to introduce contrasts.
Usage Notes
'But' is one of the most common conjunctions in English. It is used to connect contrasting ideas, introduce exceptions, or emphasize limitations. In informal speech, it can soften a statement or introduce a contrasting point politely.
English Dictionary