'oscillate' definitions:

Definition of 'oscillate'

(from WordNet)
verb
Be undecided about something; waver between conflicting positions or courses of action; "He oscillates between accepting the new position and retirement" [syn: hover, vibrate, vacillate, oscillate]
verb
Move or swing from side to side regularly; "the needle on the meter was oscillating" [syn: oscillate, vibrate]