From quaver + -y.
quavery (comparative more quavery, superlative most quavery)
- Apt to quaver; shaky, trembling. [from 16th c.]
- 2011, Adam Roberts, By Light Alone, Gollancz 2012, p. 110:
- In the middle of the square a fountain poured a quavery thread of shining water into its stone font.