ambiguity
am·bi·gu·i·ty
/ˌæmbəˈgjuːwəti/ noun , pl -ties
: something that does not have a single clear meaning : something that is ambiguous
[ noncount ] You should remove ambiguity [=vagueness] from your essay by adding more details.
moral ambiguity [=lack of certainty about whether something is right or wrong]
[ count ] the ambiguities in his answers