Be undecided
Else clues• Be in doubt
• Be inconsistent
• Be indecisive
• Be on the fence
• Be unable to decide
• Be uncertain
• Be unsteady
• Be unsure
• Be wishy-washy
• Flag-___ (patriot)
• Flip-flop on an issue
• Fluctuate
• Flutter
• Go back and forth
• Go back and forth in deciding
• Have doubts
• Have second thoughts
• Hedge
• Hesitate
• Not stick to one's guns
• Run hot and cold
• Seesaw
• Semaphore sender
• Shilly-shally
• Show doubt
• Show indecision
• Show uncertainty
• Sing vibrato, say
• Sit on the fence
• Straddle the fence
• Swing to and fro
• Vacililate^WAVE
• Vacillate
• Waffle
• The act of pausing uncertainly
• The act of moving back and forth