What does ultracool mean?
Ultracool means extremely cool.
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Pronunciation varies by accent · adjective
extremely cool.
Use ultracool when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Ultracool means extremely cool.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use ultracool where its definition matches the intended context.
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