vacillate (v.)
- alternate
- bob
- bobble
- careen
- change
- coggle
- dally
- dangle
- dither
- equivocate
- falter
- flounder
- fluctuate
- flutter
- halt
- hesitate
- librate
- lurch
- nutate
- oscillate
- pitch
- reel
- resonate
- rock
- roll
- seesaw
- shake
- shift
- shuffle
- stagger
- swag
- sway
- swing
- teeter
- teeter-totter
- tergiversate
- toss
- totter
- turn
- vary
- vibrate
- wag
- waggle
- wave
- waver
- weak
- wigwag
- wobble
