Adverb of certainty

placed before the main verb

She surely looks like her mother.

He probably passed the test.

They clearly do not enjoy this class.

go after "be" verbs

She is definitely unhappy at her job.

He is undoubtedly a hard worker.

The singers are certainly talented.

  • Examples

Probably

-to be most likely; almost certain

Definitely

  • in a definite manner

Clearly

  • to be clear about something

Certainly

  • to be sure of something

Surely

  • to say with confidence

Undoubtedly

  • to say without doubt

used with auxiliary verbs or helping verbs

She is definitely going to college.

He has certainly given much of his time.

We will probably eat at home.

placed at the beginning of a sentence.

Certainly, you know what is going on.

Probably, she has gotten lost.

Undoubtedly, Michael Jordan was one of the greatest basketball players of all time.

Surely, someone is home with the child.