siker
Sick"er, Sik"er, a. Etym: [OE. siker; cf. OS. sikur, LG. seker, D. zeker, Dan. sikker, OHG. sihhur, G. sicher; all fr. L. securus. See Secure, Sure.] Defn: Sure; certain; trusty. [Obs. or Prov. Eng. & Scot.] Burns. When he is siker of his good name. Chaucer. Sick"er, Sik"er, adv. Defn: Surely; certainly. [Obs.] Believe this as siker as your creed. Chaucer. Sicker, Willye, thou warnest well. Spenser. Sik"er, a. & adv., Sik"er*ly, adv., Sik"er*ness, n., etc. Defn: See 2d Sicker, Sickerly, etc. [Obs.]