Synonyms of 'uncertainty'
2 doubtDictionary, confusion, dilemma
The magazine ignores all the uncertainties males currently face.
They were troubled and full of doubt.
Omissions in my recent article may have caused some confusion.
The issue raises a moral dilemma.
She had some misgivings about what she was about to do.
I had a sudden qualm that all might not be well.
He shook his head in bewilderment.
Young drinkers create a quandary for drinks companies.
He looked at me in puzzlement.
There was utter perplexity in both their expressions.
3 hesitancyDictionary, hesitation, indecision
There was a hint of uncertainty in his voice.
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If you say that there is ambiguity in something, you mean that it is unclear or confusing, or it can be understood in more than one way.
the ambiguities of language
I've never hidden my ambivalence about getting married.
Thesaurus for uncertainty from the Collins English Thesaurus
Uncertainty is a state of doubt about the future or about what is the right thing to do.