Englishfor English speakers
killer
Noun
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Someone who kills. Usually this mean someone who kills other people, and does not have a good reason to kill.
The police caught the killer today.
She was happy that her brother's killer was caught.
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Something that kills.
Lighting can be a real killer.
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Something that cause problems.
Failing the exam was a real killer.
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Something that is very exciting.
The show was great, a real killer.
killer
Adjective
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If something is killer it kills.
Watch out! There are killer bees!
The family barely got away from the killer storm.
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If something is killer it is very good.
That was a killer show!
well
Adverb
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In a good way.
He washed the table very well, so now it is very clean.
well
Noun
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A hole in the ground for getting water or oil.
There was no river nearby, so they dug a well to get water.