Lewis & Short

indēsĭnens, entis, adj. [2. in-desino], incessant (late Lat.), Ennod. Ep. 6, 10.
Adv.: indēsĭnenter, incessantly (late Lat.): affero sacrificia, Cypr. Ep. 69: et indeficienter inhaerere, Aug. Conf. 12, 11.