The Collaborative International Dictionary
Incessably
Incessable \In*ces"sa*ble\, a. [L. incessabilis; pref. in- not +
cessare to cease.]
Unceasing; continual. [Obs.]
--Shelton. -- In*ces"sa*bly,
adv. [Obs.]
Wiktionary
incessably
adv. continually; incessantly