The Collaborative International Dictionary
Sithens
Sithence \Sith"ence\, Sithens \Sith"ens\, adv. & conj.
Since. See Sith, and Sithen. [Obs.]
--Piers Plowman.
Wiktionary
sithens
adv. (obsolete form of sithence English)
Usage examples of "sithens".
But for to save us, that sithens us bought: Then needeth us no weapon us to save, But only, where we did not as we ought, Do penitence, and mercy ask and have.