Quickly vs Soon

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

Quickly

Top 1,000 (very common)A1adverb

Soon

Top 1,000 (very common)A1adverb
 QuicklySoon
Pronunciation🇬🇧 /["/ˈkwɪkli/"]/🇺🇸 /["/ˈkwɪkli/"]/🇬🇧 /["/suːn/"]/🇺🇸 /["/suːn/"]/
MeaningIn a fast mannerin a short time
ExampleShe ran quickly to catch the bus.I will call you soon.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelA1A1
Part of speechadverbadverb
Collocationsmove quickly, react quickly, think quicklycome soon, arrive soon, leave soon, start soon
Antonymsslowlylater, eventually, after
Common mistakesUsing 'quick' instead of 'quickly' when modifying a verb., Placing 'quickly' too far from the verb it modifies., Confusing 'quickly' with 'fastly' since 'fast' is the correct adverb.Confuse with 'late' — 'soon' refers to quick timelines, 'late' implies delays., Overuse in formal situations — consider alternatives like 'shortly' for more formal contexts.
Usage notesUse 'quickly' when describing how something is done fast. Appropriate in both spoken and written English, but may be overly formal in casual conversations.Use 'soon' when you want to indicate that something will happen in the near future. It can be used in various contexts, both informal and formal. Avoid using it in very specific timeframes.

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Quickly
Soon

Frequently asked questions: Quickly vs Soon

What's the difference between Quickly and Soon?

Quickly: In a fast manner Soon: in a short time

Are Quickly and Soon the same CEFR level?

Quickly: A1, Soon: A1 on the CEFR scale.

What part of speech are Quickly and Soon?

Quickly: adverb, Soon: adverb.

Can you show an example of each?

Quickly: She ran quickly to catch the bus. Soon: I will call you soon.

Can I use Quickly and Soon interchangeably?

Not always. Quickly and Soon 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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