Answer: uncertain

AnswerCrossword Clue
UNCERTAINIffy
UNCERTAINUp in the air
UNCERTAINHemming and hawing
UNCERTAINDoubtful.
UNCERTAINIndefinite
uncertain(of a person) Not completely confident or sure of something
uncertainnot certain also INCERTAIN
uncertainNot able to be relied on; not known or definite