(idiomatic, colloquial) Thoroughly, completely, in every way imaginable.

(idiomatic, euphemistic) Buried six feet underground; not alive; dead.

(soccer) An enclosed area inside the penalty area, extending 6 yards (5.5 metres) from the goal, inside which a goal kick must be taken.

(idiomatic) In a state of confusion. / Used other than figuratively or idiomatically: see all, sixes, and, nines.

(Ireland, informal) The twenty-six counties that form the Republic of Ireland.

(Malaysia, Singapore, Singlish, colloquial) Careless; shoddy. / (Malaysia, Singapore, Singlish, colloquial) Incompetent.

Alternative form of Joe Sixpack

(cricket) To score six points against (a bowler) by hitting the ball over the boundary. / (idiomatic) To affect in a devastating way by some unexpected news. / To hit another person very hard.

(idiomatic) Two equivalent choices or situations.

(geometry) A configuration of 30 points and 12 lines. The lines can be partitioned into two subsets of six: each line is disjoint from (skew with) the lines in its own subset of six lines, and intersects all but one of the lines in the other subset of six lines. Each of the 12 lines of the configuration contains five intersection points, and each of these 30 intersection points belongs to exactly two lines, one from each subset.