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Reanschi Posted 15 years ago
Grammar

FAST and QUICK

Hey! After a long time, I'm back with another question:

When do I use fast and when do I use quick?

Like: "He is running fast". It seems I cannot use "He's running quickly" in this sentence. What is the rule for this matter?

Regards Renschi
  

Top answer

Actually, you could use either one in this case. quick is an adjective, as is fast. Quickly is an adverb, as is fast.

— Philip

  • Actually, you could use either one in this case.
  • quick is an adjective, as is fast.
  • Quickly is an adverb, as is fast.
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4 Answers
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Actually, you could use either one in this case.

quick is an adjective, as is fast.

Quickly is an adverb, as is fast.
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Hi,

can I use "prompt" to replace "quick " and "fast" in this sentence?

"thank you for your prompt reply"

Thanks

Pamela
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Yes. It carries the meaning of "in a timely manner".
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So, quick and fast do always mean the same and I can use both of them?
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