noun
a high point or level
adjective
having a great vertical extent
adverb
at or to a considerable or specified height
preposition
at or to a point or level above the ground or other surface
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The high levels of pollution in the city are a cause for concern.
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I love going for hikes in the mountains because of the high altitude.
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I can't believe how high the prices are at that fancy restaurant.
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Her spirits were high after receiving the good news.