not reliable; not certainly knowing or known
doubtful, changeable
Cases of word usage
1) an uncertain event (especially one causing problems) (contingency)
2) that can be argued about because uncertain (debatable)
3) clear; not doubtful or uncertain (definite)
4) to move, walk or act in an uncertain or hesitating manner, from either weakness or fear (falter)
5) hesitating; uncertain (halting)
6) to walk with short, uncertain steps as a baby does (toddle)
7) state of being uncertain; something which is uncertain (uncertainty)
8) to cause (a person) to become troubled, anxious or uncertain (unsettle)
9) to change one's mind often; be uncertain (in opinion etc) (vacillate)
