v. & n.
--v.intr.
1. shake, tremble.
2 rock to and fro.
3 (of a person) shake or shudder (was quaking with fear).
--n.
1. colloq. an earthquake.
2 an act of quaking.
Phrases and idioms:
quaking-grass any grass of the genus Briza, having slender stalks and trembling in the wind: also called dodder-grass.
Derivatives:
quaky adj. (quakier, quakiest).
Etymology: OE cwacian