Skip to content

Dictionary-enhanced synonyms

Synonyms for “Certainly” — 4 Other Ways to Say It

Definitely or for sure; used to show you are confident or to agree with someone.

IPA: /ˈsɜːrtnli/Level: A2Register: neutralPart of speech: adv

Meaning of Certainly

Without doubt; definitely; in a way that shows confidence or agreement.

How to Pronounce Certainly

IPA: /ˈsɜːrtnli/ Stress: Ooo

Pronounce with stress on the first syllable: SER-tn̩-lee. The middle part sounds like a quick 'tn̩' (schwa with n).

Full pronunciation guide for certainly →

4 Synonyms for Certainly — Words Similar to Certainly

Browse alternative words with their meaning, level, and a real example sentence so you pick the synonym that fits your context.

Smart Synonyms for Certainly — When to Use Each

definitely

for emphasis on the truth or accuracy of

of course

when politely agreeing or confirming someone's request

How to Use Certainly and Its Synonyms in Sentences

  • You will certainly enjoy the movie if you like action films. A2
  • The project is certainly going to take longer than we initially planned. B1
  • A: Can you help me? B: Certainly, I'd be happy to assist you. A2

Frequently Asked Questions About Synonyms of Certainly

What is another word for "certainly"?

Common synonyms for "certainly" include: definitely, surely, absolutely, without doubt.

What can I say instead of "certainly"?

Try one of these alternatives: definitely, surely, absolutely, without doubt. Pick the synonym whose register and meaning fits your sentence — see the cards above for definitions and examples.

Is "certainly" formal or informal?

"certainly" is generally used in neutral contexts.

When should I use "certainly" instead of "definitely"?

Use "certainly" when you want to keep the exact nuance shown in the meaning section above; switch to "definitely" when you need a different register, level, or shade of meaning. Compare the cards above to decide.

Explore “Certainly” in Other Tools