|1.||[ verb ] be undecided about something; waver between conflicting positions or courses of action|
|Synonyms:||hover vibrate oscillate|
"He oscillates between accepting the new position and retirement"
|Related terms:||hesitate shillyshally oscillation|
|2.||[ verb ] move or sway in a rising and falling or wavelike pattern|
"the line on the monitor vacillated"
|Related terms:||swing fluctuate variation waver fluctuation|