Certain Synonyms
100 certain synonyms include unquestionable, sure, definite, beyond question, not in question, not in doubt, beyond doubt, unequivocal, and undeniable. Certain is an adjective, and its antonyms are unthinkable, doubtful, possible, unlikely, and unreliable. Here are some additional synonyms for "certain" with example sentences.
Another word for Certain
100 other ways to say certain.
1. unquestionable
- very likely
- unquestioned
- unquestionable
- unpreventable
- unmistakable
- unfailing
- unerring
- unequivocal
- undoubted
- undisputed
- undeniable
- uncontested
- unchallenged
- unavoidable
- trustworthy
- trusted
- tried and tested
- transparent
- there are no two ways about it
- tested
- sure to happen
- sure-fire
- sure
- sovereign
- sound
- reliable
- recognized
- predictable
- predestined
- plain
- patent
- palpable
- out of one's hands
- obvious
- not in question
- not in doubt
- necessary
- nailed on
- manifest
- irrefutable
- in the bag
- infallible
- inexorable
- inevitable
- inescapable
- ineluctable
- indubitable
- indisputable
- incontrovertible
- incontestable
- guaranteed
- foolproof
- fated
- evident
- efficacious
- effective
- destined
- dependable
- definite
- confirmed
- conclusive
- clear
- bound to happen
- bound
- beyond question
- beyond doubt
- automatic
- assured of doing something
- assured
- as sure as eggs is eggs
- acknowledged
- accepted
2. sure
- unshaken in one's belief
- sure
- secure in one's belief
- satisfied
- positive
- persuaded
- not question
- in no doubt
- hold the unwavering view
- have no doubt
- easy in one's mind
- convinced
- confident
- assured
3. determined
Use certain in a Sentence
An increase in temperature can trigger the blooming of certain flowers in spring.
certain habits are potentially harmful.
Doctors may recommend to abort in certain medical cases.
Even emotional support can make someone an abetter in certain cases.
He felt certain of victory.
I am certain about this.
New regulations prohibit the sale of certain products.
Only certain activities are allowed here.
Religious reasons led to her abstention from certain foods.
She is certain of success.
The airline prohibited carrying liquids over a certain amount.
Violence has become rampant in certain neighborhoods.
We are certain it's true.