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1. Having periodic vibrations
   - oscillatory

1. Be undecided about something; waver between conflicting positions or courses of action
   "He oscillates between accepting the new position and retirement"
   - hover, vibrate, vacillate, blow hot and cold
    
2. Move or swing from side to side regularly
   "the needle on the meter was oscillating"
   - vibrate

See also: oscillation, periodic, periodical

Type of: balk, baulk [Brit], hesitate, sway, swing, waffle, waver

Encyclopedia: Oscillate