Englishfor English speakers
cold
Adjective
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If something is cold, it is low in temperature.
The wind made her hands cold.
It's going to be very cold today so wear a jacket.
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If someone is cold, they are not kind.
She's always so friendly to everyone, but she's really cold to him.
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If you have cold feet, you are nervous about something you planned to and you feel like not doing it.
I almost took the new job, but in the end I got cold feet.
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If you give someone the cold shoulder, you ignore them or you are unfriendly towards them.
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If you stop cold, you stop very suddenly.
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If you are out cold, you are unconscious.
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A cold light or colour is a one, often with some blue, that makes you feel cold or empty.
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If you do something cold, you do it without any preparation.
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Cold cash is coins and bills, not promises to pay.
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If something leaves you cold, it doesn't interest you at all.
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If someone's or something's trail is cold, you can't find them because they have been missing for too long.
cold
Noun
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A mild sickness. It gives your trouble with your nose and throat.
He has a cold, so he stayed in bed, kept warm, and took some medicine.
air
Noun
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Air is a mixture of gases. It has no color or odor (smell)
We breathe air to live.
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You put on airs when you act arrogantly.
The woman put on the airs in front of her friends.
air
Verb
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If you air something, you broadcast it, either over the radio, or on television.
Hurry! You'll miss the story about homeless children that is about to air on the local news!
unit
Noun
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One of a measure of something; the amount of something that is counted as "one".
Measure five units to the left.
$4 is the unit price.
A pound is a useful unit for thinking about amounts of butter.
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Form of measurement.
I prefer metric units.
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Item, used when no other word for something exists.
He set up the A/C unit.