tremor
https://gyazo.com/9104eaeeb447b44ef3e8150bb1ca9698
source: Kon Shaking GIF - Kon Shaking Tea - Discover & Share GIFs
noun
an involuntary quivering movement:
(興奮･恐怖･病気による)震え, 身震い
e.g. a disorder that causes tremors and muscle rigidity.
(also earth tremor) a slight earthquake.
(地面などの)震動; (光･音などの)ゆらめき, 微動
a sudden feeling of fear or excitement:
ぞくぞくする感じ
e.g. a tremor of unease.
a tremble or quaver in a person's voice.
震える声［音］
ORIGIN
early 17th century: from Latin tremor, from tremere ‘to tremble’.