Perhaps vs Probably

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

Perhaps

Top 1,000 (very common)A2adverb

Probably

Top 1,000 (very common)A1adverb
 PerhapsProbably
Pronunciation🇬🇧 /["/pəˈhæps//præps/"]/🇺🇸 /["/pərˈhæps/"]/🇬🇧 /["/ˈprɒbəbli/"]/🇺🇸 /["/ˈprɑːbəbli/"]/
Meaningmaybe; it might be truemost likely; it seems that something will happen
Example‘Are you going to come?’ ‘Perhaps. I'll see how I feel.’You're **probably right**.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelA2A1
Part of speechadverbadverb
Collocationsperhaps we should, perhaps it is, perhaps he thoughtprobably going to, probably not, probably true
Antonymsdefinitely, certainlyunlikely, improbable
Common mistakes'Perhaps' can't be used as a noun., Confused with 'perchance', which is more archaic., Using 'perhaps' in very direct or commanding statements.Using 'probably' with negative verbs incorrectly, 'Probably' used too frequently can sound unsure, Confusing 'probably' with 'probably not'
Usage notesUse 'perhaps' in formal writing or speech. It's less common in casual conversations, where 'maybe' is preferred. Avoid using it when being certain.Use 'probably' when you want to indicate that something is likely true or will happen. It's appropriate in both spoken and written English, but avoid in very formal contexts where more certain language is expected.

See it in real clips

Perhaps
Probably

Frequently asked questions: Perhaps vs Probably

What's the difference between Perhaps and Probably?

Perhaps: maybe; it might be true Probably: most likely; it seems that something will happen

Which is more advanced: Perhaps and Probably?

Perhaps is the highest level, at A2, on the CEFR scale.

Are Perhaps and Probably the same CEFR level?

Perhaps: A2, Probably: A1 on the CEFR scale.

What part of speech are Perhaps and Probably?

Perhaps: adverb, Probably: adverb.

Can you show an example of each?

Perhaps: ‘Are you going to come?’ ‘Perhaps. I'll see how I feel.’ Probably: You're **probably right**.

Can I use Perhaps and Probably interchangeably?

Not always. Perhaps and Probably 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