adj.
Pronunciation: ˌ ə n- ' s ə r-t ə n
Function: 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>
– un · cer · tain · ly adverb
– un · cer · tain · ness \ -t ə n-(n) ə s \ noun