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"I will certainly" vs "I will surely"

These two phrases, which are basically identical in meaning, are used to indicate that you definitely intend to do something.

Last Updated: December 10, 2017

I will certainly

This is correct

You can use this phrase to talk about something you definitely intend on doing.

ExpertExplanation provided by a TextRanch English expert


Some examples from our editors:

  • I will certainly let you know if a position opens up.
  • I will certainly address this issue at once.

Some alternatives from our editors:

  • I will definitely
  • I will surely
  • I most certainly will

I will surely

This is correct

Use this phrase to indicate that you will definitely do something.

ExpertExplanation provided by a TextRanch English expert


Some examples from our editors:

  • I will surely contact you.
  • I will surely perform this task to the best of my ability.

Some alternatives from our editors:

  • I will certainly
  • I will definitely

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