shivering

verb

1. (form-of, gerund, participle, present)present participle and gerund of shiver

noun

1. The action of a person or thing that shivers; a trembling.

   “He was shivering due to the cold temperature in the room.”

   “Generally speaking, the attack does not involve more inconvenience than this; but in some cases there are shiverings and flushings, cough, loss of appetite, and pain in the right side...”