Not very probable vs Unlikely

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

Not very probable

Top 5,000 (fairly common)

Unlikely

Top 2,000 (common)B1adjective
Most common: Unlikely
 Not very probableUnlikely
Pronunciation🇬🇧 //nɒt ˈvɛri ˈprɒbəbl//🇺🇸 //nɑt ˈvɛri ˈprɑbəbəl//🇬🇧 /["/ʌnˈlaɪkli/"]/🇺🇸 /["/ʌnˈlaɪkli/"]/
Meaningsomething that is unlikely to happenNot likely to happen or to be true.
ExampleIt’s not very probable that they will win the game.It is unlikely that it will rain today given the clear skies.
RegisterNeutralNeutral
How commonTop 5,000 (fairly common)Top 2,000 (common)
CEFR level-B1
Part of speechadjective
Collocationsnot very likely, not very possible, not very realisticappear, be, look, extremely, fairly, very, appear, be, look, extremely, fairly, very, appear, be, look, extremely, fairly, very
Antonymscertain, likelylikely, probable, certain
Common mistakesUsing 'not very possible' instead of 'not very probable', Confusing with 'unlikely' without understanding subtle differences, Using it in overly formal contextsConfused with 'unlikely' vs 'unlikelyhood', Incorrectly using it in an informal context where 'improbable' might fit better., Using 'unlikely' to describe a person's character instead of a situation.
Usage notesUse this phrase in discussions about events that are doubtful. Avoid in formal writing where more precise language may be expected.Use 'unlikely' to describe situations or outcomes that are not expected. It's more appropriate in neutral contexts; avoid in very formal writing.

See it in real clips

Not very probable
Unlikely

Frequently asked questions: Not very probable vs Unlikely

What's the difference between Not very probable and Unlikely?

Not very probable: something that is unlikely to happen Unlikely: Not likely to happen or to be true.

Which is more common: Not very probable and Unlikely?

Unlikely is the most common in everyday English.

Can you show an example of each?

Not very probable: It’s not very probable that they will win the game. Unlikely: It is unlikely that it will rain today given the clear skies.

Can I use Not very probable and Unlikely interchangeably?

Not always. Not very probable and Unlikely 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