text: shud·der (shŭd'ər) \nintr.v., -dered, -der·ing, -ders.\nTo shiver convulsively, as from fear or revulsion. See synonyms at shake.\nTo vibrate; quiver: The airplane shuddered in the turbulence.\nn.\nA convulsive shiver, as from fear or revulsion; a tremor.\n\n[Middle English shodderen, perhaps of Middle Dutch or Middle Low German origin.]\nCourtesy: Gurunet