Blog reader Paul asks:
I’ve seen ‘fast’ and ‘quickly’ used as though they were interchangeable. Is this correct?
Strictly speaking, fast is an adjective while quickly is an adverb. Fast refers to speed, and quickly refers to time.
For example:
‘That car is very fast.’
‘The car quickly pulled over.’
The confusion arises because American English speakers have no qualms about using fast as an adverb. British English speakers, however, tend to avoid that usage.
Image credit: Darunrat Wongsuvan / Shutterstock
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