Main entry: sure, certain
Definition: having or feeling no doubt or uncertainty; confident and assured
Usage: felt certain of success; was sure (or certain) she had seen it; was very sure in his beliefs; sure of her friends
Antonyms: uncertain, unsure, incertain
Definition: lacking or indicating lack of confidence or assurance
Antonyms: negative
Definition: characterized by or displaying negation or denial or opposition or resistance; having no positive features
Antonyms: neutral
Definition: possessing no distinctive quality or characteristics
Antonyms: negative
Definition: reckoned in a direction opposite to that regarded as positive
Antonyms: disconfirming, negative
Definition: not indicating the presence of microorganisms or disease or a specific condition
Antonyms: shy, timid, unsure, diffident
Definition: lacking self-confidence
Antonyms: unconvinced
Definition: lacking conviction
Main entry: certain, sure
Definition: certain to occur; destined or inevitable
Usage: he was certain to fail; his fate is certain; In this life nothing is certain but death and taxes- Benjamin Franklin; he faced certain death; sudden but sure regret; he is sure to win
Antonyms: uncertain
Definition: not certain to occur; not inevitable
Antonyms: unbound
Definition: not restrained or tied down by bonds
Antonyms: unbound
Definition: not secured within a cover
Antonyms: free
Definition: unconstrained or not chemically bound in a molecule or not fixed and capable of relatively unrestricted motion
Main entry: sure
Definition: infallible or unfailing
Usage: a sure (or true) sign of one's commitment
Antonyms: false
Definition: not in accordance with the fact or reality or actuality
Main entry: sure
Definition: certain not to fail
Usage: a sure hand on the throttle
Antonyms: unsteady
Definition: subject to change or variation
Main entry: sure
Definition: physically secure or dependable
Usage: a sure footing; was on sure ground
Antonyms: insecure
Definition: lacking self-confidence or assurance
Definition: lacking in security or safety
Antonyms: insecure
Definition: not firm or firmly fixed; likely to fail or give way
Main entry: certain, sure
Definition: exercising or taking care great enough to bring assurance
Usage: be certain to disconnect the iron when you are through; be sure to lock the doors
Antonyms: careless
Definition: marked by lack of attention or consideration or forethought or thoroughness; not careful
Main entry: indisputable, sure
Definition: impossible to doubt or dispute
Usage: indisputable (or sure) proof
Antonyms: uncertain
Definition: not established beyond doubt; still undecided or unknown
Antonyms: uncertain, unsure, incertain
Definition: lacking or indicating lack of confidence or assurance
Antonyms: uncertain
Definition: not certain to occur; not inevitable
Main entry: sure, certain
Definition: reliable in operation or effect
Usage: a quick and certain remedy; a sure way to distinguish the two; wood dust is a sure sign of termites
Antonyms: undependable, unreliable
Definition: not worthy of reliance or trust
Main entry: trusted, sure
Definition: (of persons) worthy of trust or confidence
Usage: a sure (or trusted) friend
Antonyms: untrustworthy, untrusty
Definition: not worthy of trust or belief