certainly

adverb cer·tain·ly \ -lē \
Updated on: 10 Dec 2017

Definition of certainly

1 : in a manner that is certain : with certainty
2 : it is certain that : assuredly

Examples of certainly in a Sentence

  1. It will certainly rain tomorrow.

  2. This year's festival was certainly much better than last year's.

  3. I'm certainly going to try.

  4. The new version is most certainly easier to use.

  5. The snake that bit her was almost certainly poisonous.

Recent Examples of certainly from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'certainly.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of certainly

14th century



CERTAINLY Defined for English Language Learners

certainly

adverb

Definition of certainly for English Language Learners

  • : without doubt

  • : of course


CERTAINLY Defined for Kids

certainly

adverb cer·tain·ly \ ˈsər-tᵊn-lē \

Definition of certainly for Students

1 : without fail
  • I will certainly help.
2 : without doubt
  • You certainly don't look your age.


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