[sing for one's supper] {v. phr.}, {informal} To have to work […]

[sing one's praises] {v. phr.} To extol or praise continuously. * […]

[single out] {v. phr.} To select or choose one from among […]

[sink or swim] {v. phr.} To succeed or fail by your […]

[sit on a bomb] or [bombshell] {v. phr.}, {informal} To be […]

[sit on one's hands] {v. phr.}, {informal} To do nothing; fail […]

[sit tight] {v. phr.}, {informal} To make no move or change; […]

[sit up and take notice] {v. phr.}, {informal} To be surprised […]

[sit up for] {v. phr.} To wait until after the usual […]

[sit up with] {v. phr.} To be with; particularly to keep […]