What is surely; certainly. [Obs.] Believe this as siker as your creed. Chaucer. Sicker, Willye, thou warnest well. Spenser called?

sicker — Surely; certainly. [Obs.] Believe this as siker as your creed. Chaucer. Sicker, Willye, thou warnest well. Spenser. (Webster's 1913.)

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