1) Cliff-hanging 2) Nail-biting 3) Suspenseful 4) Tense 5) Undecided in mind 1) Indecisive 2) Suspenseful 3) Tense 
• (a.) Tending to suspend, or to keep in suspense; causing interruption or delay; uncertain; doubtful.
Tending to suspend, or to keep in suspense; causing interruption or delay; uncertain; doubtful. 'In suspensive thoughts.' . 'A suspensive veto.' . 'The provisional and suspensive attitude.' (J. Morley) Suspensive condition, a condition precedent, or a condition without the performance of which the contract can not be completed. ... Origin: Cf. F. S...
Sus·pen'sive adjective [ Confer French suspensif . See Suspend .] Tending to suspend, or to keep in suspense; causing interruption or delay; uncertain; doubtful. 'In suspensive thoughts.' Beaumont. 'A suspensive veto.' Macaulay. « The provisional and 
[adj] - undecided or characterized by indecisiveness
adjective undecided or characterized by indecisiveness
pertaining to or characterized by suspension. · undecided in mind. · pertaining to or characterized by suspense. · (of words, phrases, etc.) characterized by or expressing suspense; keeping the reader or listener in suspense. · having the effect of suspending the operation of something.