The crossword solutions for the term 'IS UNCERTAIN' are 'DOUBTS' (6 letters) and 'PENDS' (5 letters). The term 'IS UNCERTAIN' is used to describe a situation where there is doubt or hesitation about the outcome. 'DOUBTS' is a synonym for this term, as it implies that there is uncertainty or hesitation about something. 'PENDS' is another synonym, as it suggests that the outcome is still undecided and could go either way.