See tremble in Webster's New World Roget's A-Z Thesaurus II
verb
To move to and fro in short, jerky movements:
quake, quaver, quiver, shake, shiver1, shudder, twitter, vibrate. See repetitionTo move to and fro violently:
quake, rock, shake, vibrate. See repetition
noun
A state of nervous restlessness or agitation.
Often used in plural: fidget (often used in plural), jitter (used in plural), jump (used in plural), shiver1 (used in plural). (Informal) all-overs, shake (used in plural). (Slang) heebie-jeebies, jim-jams, willies. See calm, fear
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