It was very fast vs Rapid

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

It was very fast

Top 1,000 (very common)

Rapid

Top 2,000 (common)B2adjective
Most common: It was very fast
 It was very fastRapid
Pronunciation🇬🇧 //ɪt wəz ˈvɛri fæst//🇺🇸 //ɪt wəz ˈvɛri fæst//🇬🇧 //ˈræp.ɪd//🇺🇸 //ˈræp.ɪd//
MeaningIt happened quickly.happening very quickly
ExampleThe cheetah was very fast when chasing its prey.The rapid changes in technology are hard to keep up with.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR level-B2
Part of speechadjective
Collocationsvery fast pace, very fast speed, very fast responserapid response, rapid increase, rapid change
Antonyms-slow, gradual, leisurely
Common mistakesUsing it with 'too' - 'It was too fast' could imply negativity., Confusing with 'fastly' - 'Fast' is the correct adverb here.Confusing with 'quick', which implies speed but may not denote the same urgency., Using 'rapid' in contexts where a slower pace is typical.
Usage notesUse to describe something that happens quickly. Avoid informal settings where a tighter description might be better.Used to describe actions or changes that occur with speed. Suitable for both formal and informal contexts.

See it in real clips

It was very fast
Rapid

Frequently asked questions: It was very fast vs Rapid

What's the difference between It was very fast and Rapid?

It was very fast: It happened quickly. Rapid: happening very quickly

Which is more common: It was very fast and Rapid?

It was very fast is the most common in everyday English.

Can you show an example of each?

It was very fast: The cheetah was very fast when chasing its prey. Rapid: The rapid changes in technology are hard to keep up with.

Can I use It was very fast and Rapid interchangeably?

Not always. It was very fast and Rapid 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.

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