From Middle English agu, ague, borrowed from Old French and Middle French (fievre) aguë, “acute (fever)” (Modern French fièvre aiguë), from Late Latin (febris) acuta (“acute fever”), from Latin acūtus (“sharp, acute”) + febris (“fever”).
Cognate to acute.
ague (countable and uncountable, plural agues)
- (obsolete) An acute fever.
- (pathology) An intermittent fever, attended by alternate cold and hot fits.
- The cold fit or rigor of the intermittent fever
- A chill, or state of shaking, as with cold.
- (obsolete) Malaria.
ague (third-person singular simple present agues, present participle aguing, simple past and past participle agued)
- (transitive) To strike with an ague, or with a cold fit.