QUAVERING
quavering, tremulous
(adjective) (of the voice) quivering as from weakness or fear; “the old lady’s quavering voice”; “spoke timidly in a tremulous voice”
Source: WordNet® 3.1
Verb
quavering
present participle of quaver
Adjective
quavering (not comparable)
Trembling, or prone to trembling and shaking.
Noun
quavering (plural quaverings)
The act of something that quavers.
the quaverings and warblings in lutes and pipes
Source: Wiktionary
QUAVER
Qua"ver, v. i. [imp. & p. p. Quavered; p. pr. & vb. n. Quavering.]
Etym: [OE. quaven to shake, to tremble; cf. LG. quabbeln to shake, to
be soft, of fat substances, quabbe a fat lump of flesh, a dewlap, D.
kwabbe, and E. quiver, v.]
1. To tremble; to vibrate; to shake. Sir I. Newton.
2. Especially, to shake the voice; to utter or form sound with rapid
or tremulous vibrations, as in singing; also, to trill on a musical
instrument
Qua"ver, v. t.
Definition: To utter with quavers.
We shall hear her quavering them . . . to some sprightly airs of the
opera. Addison.
Qua"ver, n.
1. A shake, or rapid and tremulous vibration, of the voice, or of an
instrument of music.
2. (Mus.)
Definition: An eighth note. See Eighth.
Source: Webster’s Unabridged Dictionary 1913 Edition