hover, vibrate, vacillate, oscillate -- (be undecided about something; waver between conflicting positions or courses of action; "He oscillates between accepting the new position and retirement")
fluctuate, vacillate, waver -- (move or sway in a rising and falling or wavelike pattern; "the line on the monitor vacillated")
Overview of adj vacillating
The adj vacillating has 1 sense
vacillant, vacillating, wavering -- (uncertain in purpose or action)