[slap in the face] (1) {n.} An insult; a disappointment. * […]

[slave driver] {n.} A cruel, merciless boss or employer who makes […]

[slinging match] {n. phr.} A loud, angry quarrel. * /The debate […]

[slip of the pen] {n. phr.} The mistake of writing something […]

[slip of the tongue] also [slip of the lip] {n. phr.} […]

[slipup] {n.} A mistake. * /"I'm sorry, sir. That was an […]

[slow burn] {n.}, {informal} A slowly increasing feeling of anger. * […]

[slowdown] {n.} A period of lesser activity, usually in the economic […]

[small] or [wee hours] {n. phr.} The very early hours of […]

[small fry] {n.} 1. Young children. * /In the park, a […]