son - n. a person's male child

soon - ad. not long after the present time; quickly

sort - n. any group of people or things that are the same or are similar in some way; a kind of something

sound - n. fast-moving waves of energy that affect the ear and result in hearing; that which is heard

south - n. the direction to the right of a person facing the rising sun

space - n. the area outside the earth's atmosphere where the sun, moon, planets² and stars are; the area between or inside things

speak - v. to talk; to say words with the mouth; to express one's thoughts to others and exchange ideas; to give a speech to a group

special - ad. of a different or unusual kind; not for general use; better or more important than others of the same kind

speech - n. a talk given to a group of people

speed - v. to make something go or move faster; n. the rate at which something moves or travels; the rate at which something happens or is done

spend - v. to give as payment³; to use ("He spends much time studying.")

spill⁴ - v. to cause or permit⁵ liquid to flow out, usually by accident

spirit - n. the part of a human that is not physical and is connected to thoughts and emotions; the part of a person that is believed to remain alive after death

split⁶ - v. to separate⁷ into two or more parts; to divide or break into parts

sport - n. any game or activity of competition involving physical effort or skill

spread - v. to become longer or wider; to make or become widely known⁸

spring - n. the time of the year between winter and summer

spy⁹ - v. to steal or get information secretly; n. one who watches others secretly; a person employed by a government to get secret information about another country

square - n. a flat shape having four equal sides

stab¹⁰ - v. to cut or push into or through with a pointed¹¹ weapon

stand - v. to move into or be in a position in which only the feet are on a surface; to be in one position or place

star - n. a mass of gas that usually appears as a small light in the sky at night, but is not a planet¹; a famous person, usually an actor or singer

start - v. to begin; to make something begin

starve - v. to suffer or die from a lack of food

state - v. to say; to declare; n. a political¹² part of a nation

station - v. a place of special work or purpose ("a police station"); a place where passengers get on or off trains or buses; a place for radio or television broadcasts

statue - n. a form of a human, animal or other creature usually made of stone, wood or metal

stay - v. to continue to be where one is; to remain; to not leave; to live for a time ("They stayed in New York for two years.")

steal - v. to take without permission or paying

steam - n. the gas that comes from hot water

steel - n. iron¹³ made harder and stronger by mixing it with other substances¹⁴