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Adverb of Certainty (List, Examples & Worksheet)

When you are certain about something, you use an adverb of certainty. This shows that you are sure of what you are saying. For example, “I am absolutely positive that I locked the door.” or “I can tell you unequivocally that he is lying.”

What is Adverb of Certainty?

An adverb of certainty is a word that is used to modify an adjective or another adverb to indicate the level of certainty the speaker has about the statement.

Adverbs of certainty help to convey the speaker’s message with clarity and conviction.


He definitely knows what he’s doing.

In this sentence word “definitely” shows the clarity and conviction of the message, hence, it is an adverb of certainty.

There are several different adverbs of certainty that a speaker can use depending on their level of confidence in the statement.

Some of these include absolutely, definitely, certainly, unequivocally, and without a doubt. Each of these words conveys a different degree of certainty, so it is important for speakers to select the right word for their specific situation.

Read also: 11 Types of Adverb with Examples

Adverb of Certainty List and ExamplesPin
Adverb of Certainty List and Examples

Adverb of Certainty List

  • absolutely
  • definitely / definitely not
  • certainly
  • unequivocally
  • probably / probably not
  • maybe
  • indeed
  • obviously
  • truly
  • surely
  • undoubtedly
  • perhaps

Adverb of Certainty Examples

  1. probably won’t make it to the party on time.
  2. It’s probably going to rain later.
  3. I’m probably not going to win the race.
  4. You’re probably wondering why I’m so late.
  5. Maybe this is all for the best.
  6. Maybe he’s not that into me.
  7. Maybe she’s not that into me.
  8. Maybe they’re not that into me.
  9. probably won’t be able to make it to the party tonight.
  10. She probably won’t want to go out with you.
  11. probably couldn’t do that even if I wanted to.
  12. It’s probably not a good idea to go outside right now.
  13. He was undoubtedly the most talented player on the team.
  14. It is undoubtedly one of my favorite books of all time.
  15. Undoubtedly, this will be a great
  16. certainly will make it to the party on time.
  17. You certainly can’t wear that to the wedding!
  18. I don’t know how he did it, but he certainly succeeded.
  19. Indeed she would have told me if she was going out.
  20. Surely we can come to some agreement.
  21. Surely there must be a better way to do this.
  22. Perhaps the curtains are drawn to keep the room cool.
  23. Possibly, you could try calling
  24. Surely you can do better than that.
  25. She’s undoubtedly the most beautiful woman I’ve ever seen.
  26. It’s undoubtedly worth a try.

Adverb of Certainty Worksheet

  1. Possibly, he is sleeping. (Possibly)
  2. Maybe she forgot to turn off the light. ( __________ )
  3. Perhaps I should leave a message. ( __________ )
  4. It’s certainly been a long time since we’ve seen each other. ( __________ )
  5. Surely you can see the logic in my argument. ( __________ )
  6. Indeed this is not what you wanted. ( __________ )
  7. Undoubtedly, the best decision I ever made was to marry my husband. ( __________ )
  8. I’m probably the only one who arrived on time. ( __________ )
  9. Maybe I’m just overthinking things. ( __________ )
  10. The sun was undoubtedly shining on that day. ( __________ )
Adverb of Certainty WorksheetPin
Adverb of Certainty Worksheet


  1. possibly
  2. maybe
  3. perhaps
  4. certainly
  5. surely
  6. indeed
  7. undoubtedly
  8. probably
  9. maybe
  10. undoubtedly

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