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to put something in a place quickly and quietly He slipped the money into his pocket.

slip up ( informal ) to make a mistake

slip2 / slip / noun [ cou nt ]

a small mistake It was just a slip.

a small piece of paper

Write your address on this slip of paper.

slip • per / ' slipar / noun [ count ]

a light, soft shoe that you wear in the house a pair of slippers

—Look at the picture at shoe . slip • per • y / ' slipari / adjective

so smooth or wet that you cannot move on it or hold it easily

a slippery floor

The road was wet and slippery.

slit / slit / noun [ count ] a long, thin hole or cut

► slit verb ( slits , slit - ting , slit , has slit )

I slit the envelope open with a knife.

slith • er / ' slidar / verb ( slith - ers, slith - er ing, slith - ered )

to move by sliding from side to side along the ground like a snake

I saw a snake slithering down a rock.

slob / slab / noun [ cou nt ] ( informal )

a lazy, messy person

My brother's such a slob — he never cleans his room.

slo • gan / ' slougan / noun [ count ]

a short sentence or group of words that is easy to remember. Slogans are used to make people believe something or buy something antigovernment slogans an advertising slogan

slope1 / sloup / noun [ count ]

a piece of ground that has one end higher than the other,

like the side of a hill

We walked down the mountain slope.

—Look at ski slope .

slope 2 / sloup / verb ( slopes, slop - ing, sloped )

to have one end higher than the other The field slopes down to the river. a sloping roof

slop • py / slapi / adjective ( slop pi er , slop - pi est )

showing a lack of care or effort; careless or messy a sloppy piece of work

slot / slat / noun [count]

a long, thin hole that you push something through Put your money in the slot and take your ticket.

slot ma • chine / ' slat majin / noun [ count ]

a machine in which you put money and play a game to win money

SlOW 1Ф / slou / adjective ( slow er , slow est)

not moving or doing something quickly a slow train

She hasn't finished her work yet — she's very slow.

If a clock or watch is slow , it shows a time that is earlier than the real time

My watch is five minutes slow.

—ANTONYM fast slow 2 / slou / adverb

slowly

Please drive slower. slow-moving traffic

slow 3 / slou / verb ( slows , slow ing , slowed ) slow down ; slow someone or something down

to start to go more slowly; to make someone or something start to go more slowly

The train slowed down as it came into the station. Don't talk to me when I'm working — it slows me down.

slow • ly / ' slouli / adverb

at a slow speed; not quickly

The old lady walked slowly up the hill.

slug / skg / noun [ count ]

a small, soft animal that moves slowly and eats plants —Look at the picture at snail .

slum / skm / noun [ count ]

( GEOGRAPHY ) a poor part of a city where people live in old, dirty buildings

slump / skmp / verb ( slumps , slump - ing , slumped )

( BUSINESS ) (used about prices, sales, and the economy) to fall suddenly and by a large amount

Shares slumped to their lowest ever level.

to fall or sit down suddenly because you are sick, weak, or tired

Suddenly the old man slumped to the floor.

slung

form of sling 2

slush / s1aJ/ noun [ noncount ]

snow on the ground that has partly melted and is usually dirty

sly / slai / adjective

A person who is sly tricks people or does things secretly. —SYNONYM cunning

smack / smffik / verb

( smacks , smack - ing , smacked )