[qua.ver] vb qua.vered ; qua.ver.ing [ME, freq. of quaven to tremble] vi (15c) 1: tremble
2: trill
3: to utter sound in tremulous tones ~ vt: to utter quaveringly -- qua.ver.ing.ly adv -- qua.very adj
[2]quaver n (1570) 1: eighth note
2: trill 1
3: a tremulous sound