shiver in WordNet English dictionary

1. an almost pleasurable sensation of fright
   "a frisson of surprise shot through him"
   frisson  shiver  chill  quiver  shudder  thrill  tingle 
   
2. a reflex motion caused by cold or fear or excitement
   tremble  shiver  shake 
   

1. shake, as from cold
   "The children are shivering--turn on the heat!"
   shiver  shudder 
   
2. tremble convulsively, as from fear or excitement
   shudder  shiver  throb  thrill