verb /ˈkweɪvər/
  1. (+ speech) if somebody’s voice quavers, it is unsteady, usually because the person is nervous or afraid
    • ‘I'm not safe here, am I?’ she asked in a quavering voice.
Origin: late Middle English (as a verb in the general sense ‘tremble’): from dialect quave ‘quake, tremble’, probably from an Old English word related to quake. The noun is first recorded (mid 16th cent.) as a musical term.

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