Use the adjective high to describe something with a great elevation. If you want to see a really high mountain, you should visit Mount Everest.

You can also use high to describe a sound or musical note that is elevated in pitch. Some stores use a high-pitched buzzing sound to keep teenagers from loitering. The noise drives teens crazy, but it doesn't bother their parents, because adults can't hear the high frequency. High also means a state of euphoria. After you win a first place medal at the swim meet, you might be on a high for days.

Definitions of high
  1. adjective
    (literal meaning) being at or having a relatively great or specific elevation or upward extension (sometimes used in combinations like `knee-high')
    “a high mountain”
    high ceilings”
    high buildings”
    “a high forehead”
    “a high incline”
    “a foot high
    indefinitely high; lofty
    commanding, dominating, overlooking
    used of a height or viewpoint
    eminent, lofty, soaring, towering
    of imposing height; especially standing out above others
    high-altitude, high-level
    occurring at or from a relative high altitude
    high-stepped, high-stepping
    having or moving with a high step
    high-top, high-topped
    (of shoes or boots) having relatively high uppers
    of a slope; set at a high angle
    higher in place or position
    great in vertical dimension; high in stature
    situated at the top or highest position
    being or moving higher in position or greater in some value; being above a former position or level
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    literal meanings; being at or having a relatively small elevation or upward extension
    with head or back bent low
    flat-growing, ground-hugging, low-growing
    of plants that grow relatively low to the ground
    low-altitude, low-level
    occurring at a relatively low altitude
    having a small elevation above the ground or horizon or sea level
    low-set, lowset
    lower than average
    nether, under
    located below or beneath something else
    squat, underslung
    having a low center of gravity; built low to the ground
    of or characteristic of low rank or importance
    little, short
    low in stature; not tall
    being or moving lower in position or less in some value
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  2. noun
    a high place
    “they stood on high and observed the countryside”
    synonyms: heights
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    type of:
    place, spot, topographic point
    a point located with respect to surface features of some region
  3. adverb
    at a great altitude
    “he climbed high on the ladder”
    synonyms: high up
  4. adverb
    far up toward the source
    “he lives high up the river”
  5. adjective
    greater than normal in degree or intensity or amount
    “a high temperature”
    “a high price”
    “the high point of his career”
    high risks”
    “has high hopes”
    “the river is high
    “he has a high opinion of himself”
    at a higher level in training or knowledge or skill
    broad, full
    being at a peak or culminating point
    graduate, postgraduate
    of or relating to studies beyond a bachelor's degree
    of education beyond the secondary level
    advanced in complexity or elaboration
    last, utmost
    highest in extent or degree
    ascending to a level markedly higher than the usual
    of or characteristic of high rank or importance
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    less than normal in degree or intensity or amount
    debased, degraded, devalued
    lowered in value
    depressed, down
    lower than previously
    not intense
    reduced, rock-bottom
    well below normal (especially in price)
    of or characteristic of low rank or importance
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  6. adjective
    standing above others in quality or position
    “people in high places”
    “the high priest”
    synonyms: eminent
    of or characteristic of high rank or importance
  7. noun
    a lofty level or position or degree
    “summer temperatures reached an all-time high
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    a low level or position or degree
    type of:
    degree, grade, level
    a position on a scale of intensity or amount or quality
  8. noun
    a forward gear with a gear ratio that gives the greatest vehicle velocity for a given engine speed
    synonyms: high gear
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    a high gear used at high speeds to maintain the driving speed with less output power
    type of:
    gear, gear mechanism
    a mechanism for transmitting motion for some specific purpose (as the steering gear of a vehicle)
  9. noun
    an air mass of higher than normal pressure
    “the east coast benefits from a Bermuda high
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    type of:
    air mass
    a large body of air with uniform characteristics horizontally
  10. adverb
    in or to a high position, amount, or degree
    “prices have gone up far too high
  11. adverb
    in a rich manner
    “he lives high
    synonyms: luxuriously, richly
  12. adjective
    used of sounds and voices; high in pitch or frequency
    synonyms: high-pitched
    adenoidal, nasal, pinched
    sounding as if the nose were pinched
    very high
    (of a musical instrument) second highest member of a group
    alto, countertenor
    of or being the highest male voice; having a range above that of tenor
    artificially high; above the normal voice range
    peaky, spiky
    having or as if having especially high-pitched spots
    piercing, sharp, shrill
    having or emitting a high-pitched and sharp tone or tones
    screaky, screechy, squeaking, squeaky, squealing
    having or making a high-pitched sound such as that made by a mouse or a rusty hinge
    soprano, treble
    having or denoting a high range
    higher in range than soprano
    of or close in range to the highest natural adult male voice
    (of a musical instrument) intermediate between alto and baritone or bass
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    low, low-pitched
    used of sounds and voices; low in pitch or frequency
    alto, contralto
    of or being the lowest female voice
    lower in range than tenor and higher than bass
    bass, deep
    having or denoting a low vocal or instrumental range
    contrabass, double-bass
    pitched an octave below normal bass instrumental or vocal range
    sounding as if pronounced low in the throat
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  13. adjective
    happy and excited and energetic
    synonyms: in high spirits
    elated, giddy
    exultantly proud and joyful; in high spirits
  14. adjective
    slightly and pleasantly intoxicated from alcohol or a drug (especially marijuana)
    synonyms: mellow
    drunk, inebriated, intoxicated
    stupefied or excited by a chemical substance (especially alcohol)
  15. noun
    a state of sustained elation
    “I'm on a permanent high these days”
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    low spirits
    a state of mild depression
    type of:
    an exhilarating psychological state of pride and optimism; an absence of depression
  16. noun
    a state of altered consciousness induced by alcohol or narcotics
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    type of:
    an exhilarating psychological state of pride and optimism; an absence of depression
  17. noun
    a public secondary school usually including grades 9 through 12
    synonyms: high school, highschool, senior high, senior high school
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    type of:
    Gymnasium, lycee, lyceum, middle school, secondary school
    a school for students intermediate between elementary school and college; usually grades 9 to 12
  18. adjective
    (used of the smell of meat) smelling spoiled or tainted
    synonyms: gamey, gamy
    ill-smelling, malodorous, malodourous, stinky, unpleasant-smelling
    having an unpleasant smell
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