Just vs Mere

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

Just

Top 1,000 (very common)A1adverb

Mere

Top 2,000 (common)C1adjective
Most common: Just
 JustMere
Pronunciation🇬🇧 /["/dʒʌst/"]/🇺🇸 /["/dʒʌst/"]/🇬🇧 /["/mɪə(r)/"]/🇺🇸 /["/mɪr/"]/
MeaningOnly or exactly.just or only
ExampleI just finished my homework.It took her a mere 20 minutes to win.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA1C1
Part of speechadverbadjective
Collocationsjust finished, just in case, just a momentmere coincidence, mere presence, mere handful, mere suggestion
Antonymsunjust, unfairsignificant, considerable, substantial, important
Common mistakesConfused with 'fair' meaning just/balanced., Overused in formal contexts., Misplaced 'just' leading to unclear sentences.Confusing 'mere' with 'merely' — understanding the difference in usage., Using 'mere' incorrectly with plural nouns., Overusing 'mere' in contexts that do not require emphasis.
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 'mere' to emphasize something is small or insignificant. It can sound formal in casual contexts. Avoid using it in overly casual conversations.

Frequently asked questions: Just vs Mere

What's the difference between Just and Mere?

Just: Only or exactly. Mere: just or only

Which is more common: Just and Mere?

Just is the most common in everyday English.

Are Just and Mere the same CEFR level?

Just: A1, Mere: C1 on the CEFR scale.

Can I use Just and Mere interchangeably?

Not always. Just and Mere 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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