Fast vs Quick?

20 replies
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Please help tell me the difference between "fast" and "quick". When use use "fast" and when we use "quick"

Is it better to say: "I am surprised I received your reply very fast" or "I am surprised I received your reply very quick" ?

Many thanks!
New Member04
Neither. It's "I was surprised to have recieved your reply so quickly".
(or "so soon").

"Fast" and "quick" are adjectives. You need an adverb there.
Rommie
Regular Member606
Fast is an adverb as well as an adjective, isn't it?
Junior Member56
Anonymous:
He runs fast or does he run quick?
He runs fast.
He runs quickly. Does he run quickly?
Veteran Member22,723
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Anonymous:
Quick is a measure of time; fast is a measure of speed. For example: "My car did great at the drag races today. My quarter mile elapse time was a quick 13.99 seconds, and my speed was a fast 102 mph.
Anonymous:
I was suprised of receiving your reply that quickly
I was surprised to receive your reply that quickly.
Veteran Member92,016
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Anonymous:
I am surprised to receive your reply so promptly.

Thank you for your prompt reply.
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