Just vs Only

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

Just

Top 1,000 (very common)A1adverb

Only

Top 1,000 (very common)A1adjective
 JustOnly
Pronunciation🇬🇧 /["/dʒʌst/"]/🇺🇸 /["/dʒʌst/"]/🇬🇧 /["/ˈəʊnli/"]/🇺🇸 /["/ˈəʊnli/"]/
MeaningOnly or exactly.just one or a single type of something
ExampleI just finished my homework.She is the only person I trust.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelA1A1
Part of speechadverbadjective
Collocationsjust finished, just in case, just a momentonly one, only child, only option, only when, only time
Antonymsunjust, unfairmultiple, various, some
Common mistakesConfused with 'fair' meaning just/balanced., Overused in formal contexts., Misplaced 'just' leading to unclear sentences.Using 'only' in the wrong position, changing the meaning., Confusing 'the only' with 'only'., Overusing 'only', leading to awkward sentences.
Usage notesUse 'just' to indicate something that is recent or to emphasize that something is the only thing or the most simple example. It might be informal or casual when used in conversations.Use '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.

Frequently asked questions: Just vs Only

What's the difference between Just and Only?

Just: Only or exactly. Only: just one or a single type of something

Are Just and Only the same CEFR level?

Just: A1, Only: A1 on the CEFR scale.

What part of speech are Just and Only?

Just: adverb, Only: adjective.

Can you show an example of each?

Just: I just finished my homework. Only: She is the only person I trust.

Can I use Just and Only interchangeably?

Not always. Just and Only 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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