highest

1.

of great vertical extent.

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the top of a high mountain
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tallloftytoweringsoaringelevatedgiantbigmultistoreyhigh-risesky-scraping
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short
2.

great, or greater than normal, in quantity, size, or intensity.

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a high temperature
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inflatedexcessiveunreasonableoverpricedsky-highdearcostlytopexorbitantextortionateoutrageousprohibitivesteepstiffpriceyover the topcriminalstrongpowerfulviolentintenseextremeforcefulsharpblusterygustystormysquallytempestuousturbulentboisterous
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reasonablelightcalm
1.

at or to a considerable or specified height.

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the sculpture stood about five feet high
:
high upin the airon highaloftoverhead
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low
2.

highly.

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he ranked high among the pioneers of twentieth-century chemical technology