pt. s. sat —see Sitten
A dead set: a concerted scheme to defraud a person by gaming.

set , sit : According to strict grammatical rule, sit when referring to posture is always an active intransitive, and set an active transitive. “To sit on eggs” has been characterized as colloquial English, but is sanctioned by the translators of the King James version of the Bible. “As the partridge sitteth on eggs and hatcheth them not” (Jer. xvii. 11). Shakespeare wrote “Birds sit brooding in the snow” (L. L. L. act v. sc. 2). On a poultry-farm the farmhand sets the hen but the hen sits.