Shivering
WordNet
adjective
(1) Vibrating slightly and irregularly; as e.g. with fear or cold or like the leaves of an aspen in a breeze
"A quaking bog"
"The quaking child asked for more"
"Quivering leaves of a poplar tree"
"With shaking knees"
"Seemed shaky on her feet"
"Sparkling light from the shivering crystals of the chandelier"
"Trembling hands"
noun
(2) A sensation of cold that often marks the start of an infection and the development of a fever