Sicker (?), v. i. [AS. sicerian.] (Mining) To percolate, trickle, or ooze, as water through a crack. [Also written sigger, zigger, and zifhyr.] [Prov. Eng.]
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{ Sicker, Siker }, adv. Surely; certainly. [Obs.]
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Believe this as siker as your creed. Chaucer.
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Sicker, Willye, thou warnest well. Spenser.
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