Fairly vs Reasonably vs Relatively

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

Fairly

Top 2,000 (common)B1adverb

Reasonably

Top 2,000 (common)B2adverb

Relatively

Top 2,000 (common)B2adverb
 FairlyReasonablyRelatively
Pronunciation🇬🇧 /["/ˈfeəli/"]/🇺🇸 /["/ˈferli/"]/🇬🇧 /["/ˈriːznəbli/"]/🇺🇸 /["/ˈriːznəbli/"]/🇬🇧 /["/ˈrelətɪvli/"]/🇺🇸 /["/ˈrelətɪvli/"]/
MeaningTo a moderate degree; not too much.In a fair or sensible way.The same as or similar to something else; when comparing things.
ExampleThe test was fairly easy, so I think I did well.The instructions are reasonably straightforward.The results are relatively similar to those from last year.
RegisterNeutralNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)Top 2,000 (common)
CEFR levelB1B2B2
Part of speechadverbadverbadverb
Collocationsfairly easy, fairly common, fairly good, fairly large, fairly accuratereasonably priced, reasonably good, reasonably surerelatively small, relatively new, relatively easy, relatively few
Antonymsunfairlyunreasonably, irrationallyabsolutely, entirely
Common mistakesUsing 'fairly' inappropriately with intense adjectives like 'awesome' or 'terrible'., Swapping 'fairly' with 'very' (they are not synonyms)., Misplacing 'fairly' in the sentence structure.Using 'reasonably' instead of 'reason' as a noun., Confusing 'reasonably' with 'reasonable' which is an adjective., Placing 'reasonably' incorrectly in a sentence, leading to awkward phrasing.Using 'relatively' without a comparison (e.g. saying 'relatively good' without context)., Confusing with 'relevant' which has a different meaning., Omitting the word it is comparing to, e.g., saying 'relatively' alone.
Usage notesUse 'fairly' to describe something that is somewhat true or has a moderate level. It is usually appropriate in both spoken and written English but may be less formal in certain contexts.Use 'reasonably' to indicate that something is acceptable or moderate. It’s appropriate in both spoken and written contexts but might sound overly formal in very casual conversations.Use 'relatively' to compare things or show a connection. It's neutral, so it's suitable for both spoken and written English. Avoid in very informal settings.

See it in real clips

Fairly
Reasonably

Frequently asked questions: Fairly vs Reasonably vs Relatively

What's the difference between Fairly, Reasonably, and Relatively?

Fairly: To a moderate degree; not too much. Reasonably: In a fair or sensible way. Relatively: The same as or similar to something else; when comparing things.

Are Fairly, Reasonably, and Relatively the same CEFR level?

Fairly: B1, Reasonably: B2, Relatively: B2 on the CEFR scale.

What part of speech are Fairly, Reasonably, and Relatively?

Fairly: adverb, Reasonably: adverb, Relatively: adverb.

Can you show an example of each?

Fairly: The test was fairly easy, so I think I did well. Reasonably: The instructions are reasonably straightforward. Relatively: The results are relatively similar to those from last year.

Can I use Fairly, Reasonably, and Relatively interchangeably?

Not always. Fairly, Reasonably, and Relatively 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.

Related comparisons