D defs.my
Entry 1 sense Webster, 1913

Sithence

· Sith·ence · IPA /ˈsɪðəns/
01 adv. & conj. Since. See Sith, and Sithen.
  1. 1.
    Since. See Sith, and Sithen.[Obs.] See: Sith, Sithen