(Roman Catholicism, theology) A sin which causes the loss of God's grace, leading to eternal damnation, unless the sinner repents, which includes their intent to confess and atone; such a sin is defined as a transgression against one of the Ten Commandments with the full knowledge and deliberate consent of the sinner.

Any of the seven deadly sins: anger, greed/avarice, envy, gluttony, lust, pride, and sloth.

(slang) Las Vegas, Nevada, USA / (dated, slang) Prohibition-era Montreal, Quebec, Canada

The Antichrist.

(slang) Very much, or very hard; strongly.

(humorous) Jokingly suggesting that some ostensibly undesirable task or situation has been assigned as a punishment.

(theology) Sin committed by an individual, in contradistinction to original sin.

plural of sin tax

Alternative form of sin bin

(sports) To send (a player) to the sin bin, to temporarily dismiss from the playing field.