| similar
| adjective
| v1
| almost, but not exactly, the same
| These mugs are similar.
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| simmer
| verb
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| to cook something so that it bubbles very gently
| Leave the soup to simmer for 20 minutes.
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| simple
| adjective
| v1
| easy to understand or solve.
| A simple solution.
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| simplify
| verb
| v1
| to make something easier.
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| sincere
| adjective
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| honest, or not pretending.
| She was sincere when she said she was sorry.
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| sing
| verb
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| to make a musical sound with your voice.
| She likes to sing.
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| single
| adjective
| v1
| something that is only for one person, or only one of something.
| single bed
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| sink
| verb
| v1
| to go down below the surface of water.
| The boat was sinking fast.
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| sink
| noun
| v1
| a basin with a water supply, faucets, and a drain.
| kitchen sink
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| sip
| verb
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| to drink in small amounts.
| He sipped his coffee slowly
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| siren
| noun
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| a device that makes a loud noise and is used as a warning signal.
| A fire engine’s siren.
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| sister
| noun
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| a female person who has the same mother and father as someone else.
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| sit
| verb
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| to rest your body by supporting your weight on your bottom, rather than on your feet.
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| site
| noun
| v1
| an area of ground used for a particular purpose.
| A construction site.
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| situation
| noun
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| what is happening in a particular place at a particular time.
| He found himself in a desperate situation.
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| size
| noun
| v1
| a measurement of how large or small something is.
| These shoes are the wrong size.
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| sizzle
| verb
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| to make a hissing sound during cooking.
| The sausages sizzled under the broiler.
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| skate
| verb
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| to slide along on a hard surface wearing special shoes with blades or wheels.
| roller skate
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| skateboard
| noun
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| a small board on wheels that people stand on to ride along
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| skeleton
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| a group of connected bones that support a person’s or animal’s body. There are 206 bones in a human skeleton.
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| sketch
| noun
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| a quick drawing
| A sketch of a ship.
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| skip
| verb
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| to move along, hopping lightly from one foot to another
| She skipped down the road.
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| skirt
| noun
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| a piece of clothing worn by a girl or woman that hangs down from the waist.
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| skull
| noun
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| the bone frame of the head that protects the brain and supports the face.
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| sky
| noun
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| the air around the Earth as we see it.
| The sky usually looks blue
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| skyscraper
| noun
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| a very tall building with many stories.
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| slam
| verb
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| to shut something with a bang.
| Slam the door.
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| slang
| noun
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| everyday words and phrases that are not normally used in writing or formal speaking.
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| slant
| verb
| v1
| to slope sideways.
| The wooden shelf slanted to the right.
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| slap
| verb
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| to hit quickly with the palm of your hand.
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