Sicker /(?)/

Sick·er

Sicker

v. i.
  1. To percolate, trickle, or ooze, as water through a crack. (Mining) [Prov. Eng.]

Sicker

a.
  1. Sure; certain; trusty. [Obs. or Prov. Eng. & Scot.]
    When he is siker of his good name.

Sicker

adv.
  1. Surely; certainly. [Obs.]
    Believe this as siker as your creed.
    Sicker, Willye, thou warnest well.