Certain definition

Certain as an adjective

1. definite but not specified or identified

   "set aside a certain sum each week"

2. having or feeling no doubt or uncertainty; confident and assured

   "felt certain of success"

   Same sense: sure

3. established beyond doubt or question; definitely known

   "what is certain is that every effect must have a cause"

4. certain to occur; destined or inevitable

   "he was certain to fail"

   Same sense: sure

5. established irrevocably

   Same sense: sealed

6. reliable in operation or effect

   "a quick and certain remedy"

   Same sense: sure

7. exercising or taking care great enough to bring assurance

   "be certain to disconnect the iron when you are through"

   Same sense: sure

Synonyms and antonyms

• sure definition
• sealed

Opposite: uncertain.

How to say certain

Certain has 2 syllables and rhymes with uncertain. Syllable counts and rhymes come from the CMU Pronouncing Dictionary.

Words that rhyme with certain

• uncertain
• curtain
• burton

CERTAIN in word games

Scrabble

9

Words With Friends

11

Anagrams

2

Is CERTAIN a valid Scrabble word? Yes, it is in the ENABLE list most word games use. Check CERTAIN in the word checker, or unscramble CERTAIN to see its 2 anagrams and the shorter words in its letters.