I. verb
1.
Synonyms: shake 2, jar, tremble, tremor, vibrate
Related Word: fluctuate, waver
2.
Synonyms: shake 1, ||didder, dither, quaver, quiver, shiver, shudder, tremble, tremor, twitter
II. noun
Synonyms: earthquake , ||quaker, shake, shock, temblor ( or tremblor), tremor