shudder
shud-der
noun
An act or instance of shuddering; a trembling movement of the body.
"A cold shudder ran down his spine."
verb
To tremble convulsively, typically from fear, cold, or revulsion.
"She shuddered at the thought of the spider."
Thesaurus
Synonyms: thrill, shiver, frisson, chill, tingle, quiver, throb, tremor