"malarial fever," c.1300, from Old French ague "an acute fever," from Medieval Latin (febris) acuta "sharp (fever)," fem. of acutus "sharp" (see acute).
ague a·gue (ā'gyōō)
n.
A febrile condition, especially associated with malaria, characterized by alternating periods of chills, fever, and sweating.
A chill or fit of shivering.
the translation in Lev. 26:16 (R.V., "fever") of the Hebrew word kaddah'ath, meaning "kindling", i.e., an inflammatory or burning fever. In Deut. 28:22 the word is rendered "fever."