A substitute; a replacement.

To substitute for; to replace; (theater) to serve as an understudy. / To make one of a party in a bet or other speculation. / To take a side in a dispute.

(military) A state of readiness assumed by ground troops at dawn and dusk in wartime.

(military) To assume such a state of readiness.

(nautical) To continue following the same course. / To observe a ceremony or tradition; to insist on proper behavior or recognition.

The act of standing. / A defensive position or effort. / A resolute, unwavering position; firm opinion; action for a purpose in the face of opposition.

Alternative form of stand-to

Alternative form of stand-to / To tolerate (something); to be able to withstand (something) stressful that will be ultimately beneficial.

Alternative form of standby

(US, Scotland, dated) A container which stands upright, such as a barrel or cask. / (obsolete) A weight of from two hundred and fifty to three hundred pounds, used in weighing pitch.