Shud·der v. i. [imp. & p. p. Shuddered p. pr. & vb. n. Shuddering.] To tremble or shake with fear, horrer, or aversion; to shiver with cold; to quake. “With shuddering horror pale.”
The shuddering tennant of the frigid zone. --Goldsmith.
shuddering
adj : shaking convulsively or violently