shiver
noun.
a reflex motion caused by cold or fear or excitement
Synonym: shake, tremble
noun.
an almost pleasurable sensation of fright
a frisson of surprise shot through him
verb.
tremble convulsively, as from fear or excitement
Synonym: shudder, thrill, throb
verb.
shake, as from cold
The children are shivering--turn on the heat!
Synonym: shudder