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Definition of Uncertain
1. Adjective. Lacking or indicating lack of confidence or assurance. "Touched the ornaments with uncertain fingers"
Attributes: Certainty, Assurance, Authority, Confidence, Self-assurance, Self-confidence, Sureness
Similar to: Ambivalent, Doubtful, Dubious, Groping
Antonyms: Certain, Sure
Derivative terms: Uncertainness
2. Adjective. Not established beyond doubt; still undecided or unknown. "Without further evidence his story must remain uncertain"
Similar to: Indefinite, Up In The Air
Also: Indeterminate, Undetermined
Antonyms: Certain
Derivative terms: Uncertainness
3. Adjective. Not established or confirmed. "His doom is as yet unsealed"
4. Adjective. Not certain to occur; not inevitable. "The issue is uncertain"
Also: Unpredictable
Antonyms: Certain
Derivative terms: Uncertainness
5. Adjective. Subject to change. "Unsettled weather with rain and hail and sunshine coming one right after the other"
Similar to: Variable
Derivative terms: Changeability, Changeableness
6. Adjective. Not consistent or dependable. "A gun with a rather uncertain trigger"
7. Adjective. Ambiguous (especially in the negative). "She spoke in no uncertain terms"
Definition of Uncertain
1. a. Not certain; not having certain knowledge; not assured in mind; distrustful.
2. v. t. To make uncertain.
3. a. Not certain; not having certain knowledge; not assured in mind; distrustful.
4. v. t. To make uncertain.
Definition of Uncertain
1. Adjective. not known for certain; questionable ¹
2. Adjective. not yet determined; undecided ¹
3. Adjective. variable and subject to change ¹
4. Adjective. fitful or unsteady ¹
5. Adjective. unpredictable or capricious ¹
¹ Source: wiktionary.com
Definition of Uncertain
1. certain [adj] - See also: certain
Medical Definition of Uncertain
1. 1. Not certain; not having certain knowledge; not assured in mind; distrustful. "Man, without the protection of a superior Being, . . . Is uncertain of everything that he hopes for." (Tillotson) 2. Irresolute; inconsonant; variable; untrustworthy; as, an uncertain person; an uncertain breeze. "O woman! in our hours of ease, Uncertain, coy, and hard to please!" (Sir W. Scott) 3. Questionable; equivocal; indefinite; problematical. "The fashion of uncertain evils." "From certain dangers to uncertain praise." (Dryden) 4. Not sure; liable to fall or err; fallible. "Soon bent his bow, uncertain in his aim." (Dryden) "Whistling slings dismissed the uncertain stone." (Gay) Synonym: See Precarious. Origin: Pref. Un- + certain. Cf. Incertain. Source: Websters Dictionary (01 Mar 1998)