To spend time sitting idly, not doing anything important.

An exercise in which the abdominal muscles are contracted, bringing the torso of a person lying down to a more upright position.

plural of sit-in

Intended to be done, used, consumed etc. while sitting.

An act of sitting down, especially with other people in some form of social exchange. / A sit-in, a protest of civil disobedience by people sitting and refusing to move.

(intransitive) To live temporarily in someone else's home for the purpose of protecting and tending to it in the owner's or tenant's absence.

Alternative spelling of sit-up

(intransitive) To assume a sitting position from a position lying down. / (intransitive) To sit erect. / (intransitive) To show sudden interest or surprise.

(intransitive) To assume a sitting position from a standing position. / (transitive or reflexive) To cause to be seated or in a sitting posture; to furnish a seat to.

Alternative form of sitout / Alternative form of sit-out