a state or condition of mental uncertainty or excitement, as in awaiting a decision or outcome, usually accompanied by a degree of apprehension or anxiety.

a state of mental indecision.

undecided or doubtful condition, as of affairs

For a few days matters hung in suspense.

the state or condition of being suspended.

noun

knowledge

noun

anxiety , apprehension , chiller , cliff-hanger , cloak and dagger , confusion , dilemma , doubt , eagerness , expectancy , expectation , grabber , hesitancy , hesitation , impatience , indecision , indecisiveness , insecurity , irresolution , page-turner , perplexity , potboiler , tension , thriller , uncertainty , wavering , anticipation , doubtful , mystery , unease , worry