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1. A tremulous sound
    
2. A musical note having the time value of an eighth of a whole note
   - eighth note [N. Amer]

1. Give off unsteady sounds, alternating in amplitude or frequency
   - waver
    
2. Sing or play with trills, alternating with the half note above or below
   - warble, trill

Derived forms: quavering, quavered, quavers

Type of: musical note, note, sing, sound, tone, vocalise [Brit], vocalize, voice

Encyclopedia: Quaver