Skip to content
WORDS, MADE CLEAR.
Your everyday English companion

Home/Dictionary/certainly
English dictionary

certainly Meaning & Definition

/ˈsɜː.tn̩.li/

What Does Certainly Mean?

Certainly is an adverb that means In a way which is certain; with certainty. It can also mean Without doubt, surely.

Quick Facts About Certainly

Part of speechadverb
Pronunciation//ˈsɜː.tn̩.li//
Syllables1
Synonymssure, surely and sure enough
Comparative / superlativemore certainly, most certainly

Certainly Definition (Adverb)

  1. In a way which is certain; with certainty.
  2. Without doubt, surely.

    The accident was certainly caused by human error.

  3. An emphatic affirmative answer; of course.

    Would you like it with ice?  Certainly, and with lemon please.

Synonyms of Certainly

Certainly synonyms and antonyms →

Antonyms of Certainly

No antonyms or near antonyms are listed by the available sources for this entry.

Certainly in a Sentence

The accident was certainly caused by human error.

That was certainly sweet of him.

'I'm all grown up now' -'You certainly have (grown)!'

Would you like it with ice?  Certainly, and with lemon please.

Word Forms & Grammar

certainly (comparative more certainly or (rare, obsolete) certainlier, superlative most certainly or (rare, obsolete) certainliest)

Words That Rhyme With Certainly

Origin of Certainly

From Middle English certeynly; equivalent to certain +‎ -ly.

Certainly Pronunciation

The standard pronunciation of certainly is //ˈsɜː.tn̩.li//, spoken in 1 syllable.

Certainly: Your Questions Answered

What part of speech is certainly?

Certainly is an adverb.

What is another word for certainly?

You can replace certainly with words such as sure, surely and sure enough. See the full list of certainly synonyms and antonyms.

What are the comparative and superlative forms of certainly?

The comparative form is more certainly and the superlative form is most certainly.

More About Certainly On Meaning Stash

More Words Starting With “Cert”

Trending On Meaning Stash This Week