Only vs Purely

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

Only

Top 1,000 (very common)A1adjective

Purely

Top 3,000 (common)B2adverb
Most common: Only
 OnlyPurely
Pronunciation🇬🇧 /["/ˈəʊnli/"]/🇺🇸 /["/ˈəʊnli/"]/🇬🇧 /["/ˈpjʊəli/"]/🇺🇸 /["/ˈpjʊrli/"]/
Meaningjust one or a single type of somethingOnly, just, or completely.
ExampleShe is the only person I trust.I saw the letter purely by chance.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 3,000 (common)
CEFR levelA1B2
Part of speechadjectiveadverb
Collocationsonly one, only child, only option, only when, only timepurely by chance, purely decorative, purely theoretical
Antonymsmultiple, various, someimpure, mixed, composite
Common mistakesUsing 'only' in the wrong position, changing the meaning., Confusing 'the only' with 'only'., Overusing 'only', leading to awkward sentences.Mistakenly using 'purely' when 'just' or 'only' is more appropriate., Confusing 'purely' with 'really' or 'very'., Using 'purely' with nouns instead of adjectives.
Usage notesUse 'only' to restrict meaning. It’s often used to clarify that nothing else is included. Avoid using it excessively, as it can sound limiting or exclusive.Use 'purely' in contexts that emphasize exclusivity or completeness. It's suitable for formal writing and speech, but can be used casually as well. Avoid using it in overly informal contexts.

Frequently asked questions: Only vs Purely

What's the difference between Only and Purely?

Only: just one or a single type of something Purely: Only, just, or completely.

Which is more common: Only and Purely?

Only is the most common in everyday English.

Are Only and Purely the same CEFR level?

Only: A1, Purely: B2 on the CEFR scale.

Can I use Only and Purely interchangeably?

Not always. Only and Purely 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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