† fever lentn. [ < fevern.1 + lentadj.2, after Middle French fievre lente (14th cent.)] Obsoleterare (perhaps) a prolonged or low-grade fever.
ΚΠ
a1400 in T. Wright & J. O. Halliwell Reliquiæ Antiquæ (1845) I. 54 For the fever lente: qwha that has the fever agu, that men calles lente evell, if the sekeman heved werkes that he may noght slepp, tak [etc.].
c1440 Liber de Diversis Med. 61 (margin) (MED) For þe feuer lente.