Secure, assured, assured, absolute, as sure as eggs is eggs, confident, and firm are all synonyms for sure. Uncertain and doubtful are these antonyms of sure. And here are another 93 synonyms for sure.
Sure Synonyms
1. certain
- Assured
- Certain
- Confident
- Convinced
- Decided
- Definite
- Easy in one's mind
- Free from doubt
- Persuaded
- Positive
- Satisfied
- Secure
- Unfaltering
- Unhesitating
- Unshakeable
- Unvacillating
- Unwavering
- Unshaken
2. confident
- Assured
- Bound
- Certain
- Confident
- Destined
- Fated
- Predestined
- Very likely
- With no doubts about
- Nailed on
3. unquestionable
- Absolute
- Beyond doubt
- Beyond question
- Categorical
- Certain
- Clear
- Conclusive
- Decided
- Definite
- Evident
- Final
- Incontestable
- Incontrovertible
- Indisputable
- Indubitable
- Irrefutable
- Manifest
- Obvious
- Plain
- Proven
- Settled
- True
- Undeniable
- Undoubted
- Unmistakable
- Unquestionable
- Well founded
- Well grounded
- Patent
4. guaranteed
- As sure as eggs is eggs
- Assured
- Certain
- Dependable
- Effective
- Established
- Foolproof
- Guaranteed
- In the bag
- Incontestable
- Inevitable
- Infallible
- Irrevocable
- Never-failing
- Reliable
- Sure-fire
- Tested
- Tried and true
- True
- Trustworthy
- Unambiguous
- Unerring
- Unfailing
- Efficacious
5. firm
- Confident
- Firm
- Secure
- Solid
- Stable
- Steadfast
- Steady
- Unfaltering
- Unhesitating
- Unwavering
- Unswerving