Certainly

/ˈsɜːr.tən.li/

Meaning & Definition

adverb

Used to emphasize the speaker's belief that something is true or a fact.

I will certainly attend the meeting tomorrow.

Used to express a strong affirmation or agreement.

You can certainly count on me for support.

Used to indicate that something is undoubtedly the case.

That is certainly a remarkable achievement.

Used to express confidence about a future situation.

We will certainly have the project completed by next week.

Middle English: from Old French 'certain', from Latin 'certus', meaning 'certain, sure'.

certainly so:

Used to agree with a point or statement.

certainly not:

Used to emphasize disagreement.

For sure

Are you coming to the party? For sure!

You bet

Can you help me? You bet!