uncertain


uncertain
adjective Date: 14th century 1. indefinite, indeterminate <
the time of departure is uncertain
>
2. not certain to occur ; problematical <
his success was uncertain
>
3. not reliable ; untrustworthy <
an uncertain ally
>
4. a. not known beyond doubt ; dubious <
an uncertain claim
>
b. not having certain knowledge ; doubtful <
remains uncertain about her plans
>
c. not clearly identified or defined <
a fire of uncertain origin
>
5. not constant ; variable, fitful <
an uncertain breeze
>
uncertainly adverbuncertainness noun

New Collegiate Dictionary. 2001.

Synonyms: