| S | definition | example sentence |
| safety | the lack of danger | My grandma always worries about safety in airplanes. |
| salad | mix of raw vegetables like lettuce, tomato, etc. | Would you like some salad with your meal? |
| salt | a white substance often added to food | Could you pass the salt and pepper, please? |
| sand | material found at beaches and in the desert | We went to the beach and built a castle out of sand. |
| satire | humour used to criticize someone or something | A lot of political cartoonists use satire in their work. |
| scenery | views of mountains, lakes, valleys, etc. | The scenery in the mountains was magnificent. |
| seafood | food from the sea, like fish, crabs, etc. | My wife loves seafood, especially lobster and prawns. |
| seaside | an area near the sea | Every year we spend our vacation at the seaside. |
| shame | the bad feeling you get after doing something wrong | I'll never forget the shame I felt when I was caught stealing. |
| shopping | the activity of going to shops and buying things | Can't you think of anything better to do in your free time than shopping? |
| silence | complete quiet, with no sound at all | After a moment of silence, we started talking again. |
| sleep | a natural state of unconsciousness and rest | All animals need periods of sleep, even fish and frogs. |
| smoke | clouds that rise from something that's burning | We could see the smoke, so we knew there was a fire. |
| smoking | the act of enjoying cigarettes, pipes, cigars, etc. | Some politicians want to ban smoking in all public places. |
| snow | soft flakes that fall from the sky in cold weather | Does it ever snow in Brazil, or is it too hot? |
| soap | a substance that makes cleaning easier | There's a new bar of soap in the cupboard in the bathroom. |
| software | computer programs and operating systems | We used to buy software on discs, but now we download it. |
| soil | dirt or earth in which plants can grow | The soil would be healthier if we added manure and compost to it. |
| sorrow | a feeling of great sadness | Can you imagine how much sorrow his mother must have felt? |
| soup | a liquid food usually served in a bowl | There's a tin of tomato soup in the cupboard if you want it. |
| speed | how fast something moves | I wonder what the new Ferrari's top speed is. |
| spelling | forming written words with letters | If you read more books, your spelling will improve. |
| sport | competitive activities like football, golf, tennis, etc. | Do you think Uncle Bill watches too much sport on TV? |
| steam | hot gas that rises from boiling water | Trains and ships used to be powered by steam. |
| strength | physical power | Lifting that heavy sofa took all my strength. |
| stuff | undefined material or things | What's this brown stuff on the bottom of my shoe? |
| stupidity | lack of thought or intelligence | We're all capable of stupidity from time to time. |
| success | the achievement of a goal | Success is great, but you can learn a lot from failure too. |
| sugar | sweet crystals put in tea and coffee | How many teaspoons of sugar would you like in your tea? |
| sunshine | light from the sun | We need a few minutes of sunshine every day to stay healthy. |
| symmetry | perfect balance in design or form | The more symmetry there is in a face, the more beautiful it is. |