verb

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Bad / Afraid

shudder - To tremble and shake, typically as a result of fear

Zeke shuddered when he saw the creepy tarantula approaching him.

noun

See verb

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Bad / Weak

slack - The part of a rope or line that is not held taut; the loose or unused part

At the nightclub, the slack in the velvet ropes indicated that it was the VIP section.

adjective

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Good / Beautiful

sleek - (of hair, fur, or skin) smooth and glossy

Shampoo commercials typically show women with very sleek hair that shines under the lights.

verb

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Bad / Angry

slam - To shut a door, window, or lid forcefully and loudly

When his boss told him he was fired, Keith angrily slammed the door shut when he got home.

verb

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Other / Shape

Url

skew - To cause something to be not straight or exact; to twist or distort.

The fact that so many of guys on the track team were sick negatively skewed their performance results.

adjective

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Bad / Stupid

Url

silly - Showing a lack of logic, reason, or common sense; often in a playful or harmless way.

It's silly to worry about things that are out of your control—focus on what you can change instead.

noun

See verb

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Other / Fast

skid - An act of skidding or sliding

In bad weather conditions, it's easy for a vehicle to go into a skid off the road.

verb

See noun

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Bad / Weak

slack - Loosen (something, especially a rope)

The thin rope slackened whenever the acrobat walked on it.

noun

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Bad / Dirty

slime - A sticky liquid substance that is unpleasant to touch

When Arnold brought his box of snails to class, few people wanted to touch them because of the slime in the box and on their shells

verb

See noun

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Bad / Dangerous

Url

slip - To lose balance and slide or fall accidentally.

She slipped on the icy sidewalk and fell.

noun

See verb

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Other / Sound

sizzle - A hissing sound, as of food frying or cooking

The sizzle of hot dogs on the grill is a familiar sound on Memorial Day weekend.

adjective

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Bad / Uncomfortable

skittish - (of an animal, especially of a horse) excitable or easily scared

Bill's horse was especially skittish around people it didn't know, so they had to be careful when Bill's friend Fred wanted to stroke the horse's mane.