Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “certainly”

certainly

adverb (EXTREMELY LIKELY)    /ˈsɜː.tən.li/ US  /ˈsɝː-/
very likely to happen: She will certainly win the election if the opinion polls are accurate.CertaintyConfidence and self-assurance Grammar:Adverbs as short responses (definitely, certainly)See more
(Definition of certainly adverb (EXTREMELY LIKELY) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of certainly

Browse related topics

You are looking at an entry to do with Certainty, but you might be interested in these topics from the Chance and possibility topic area:

More definitions for “certainly”

Definitions of “certainly” in other dictionaries

Word of the Day

friendship

a situation in which two people are friends

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More