Use the word peak to refer to the pointy top of something, such as the jagged peak of a tall mountain or the tapered peak that forms when you beat egg whites for a recipe.

Peak is one of those words that can play a variety of roles in a sentence. The noun peak can refer to something that is a literal highpoint, like that snow-covered peak over there in the distance, but you will also hear it used to refer to more abstract high points, such as a time of greatest success ("at the peak of your career") or top performance ("the stock price reached a peak over the summer") or highest level ("the peak of the flu season"). The word also has a verb form ("Don’t peak too soon") and an adjective form ("peak productivity") that carry similar meanings.

Definitions of peak
  1. noun
    a V shape
    synonyms: point, tip
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    widow's peak
    a V-shaped point in the hairline in the middle of the forehead
    small elevation on the grinding surface of a tooth
    the tip of an abscess (where the pus accumulates)
    type of:
    convex shape, convexity
    a shape that curves or bulges outward
  2. noun
    the highest point (of something)
    “at the peak of the pyramid”
    synonyms: acme, apex, vertex, zenith
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    the part of a hat (the vertex) that covers the crown of the head
    roof peak
    the highest point of a roof
    type of:
    extreme, extreme point, extremum
    the point located farthest from the middle of something
  3. noun
    the top or extreme point of something (usually a mountain or hill)
    “the view from the peak was magnificent”
    synonyms: crest, crown, summit, tip, top
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    brow, hilltop
    the peak of a hill
    a lofty peak
    mountain peak
    the summit of a mountain
    type of:
    place, spot, topographic point
    a point located with respect to surface features of some region
  4. noun
    the period of greatest prosperity or productivity
    synonyms: bloom, blossom, efflorescence, flower, flush, heyday, prime
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    golden age
    a time period when some activity or skill was at its peak
    type of:
    period, period of time, time period
    an amount of time
  5. noun
    the highest level or degree attainable; the highest stage of development
    “the peak of perfection”
    “summer was at its peak
    synonyms: acme, elevation, height, meridian, pinnacle, summit, superlative, tiptop, top, zenith
    see moresee less
    type of:
    degree, level, point, stage
    a specific identifiable position in a continuum or series or especially in a process
  6. noun
    the most extreme possible amount or value
    “voltage peak
    synonyms: extremum
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    lower limit, minimum
    the smallest possible quantity
    maximum, upper limit
    the largest possible quantity
    something reduced to its minimal form
    type of:
    limit, limitation
    the greatest amount of something that is possible or allowed
  7. verb
    to reach the highest point; attain maximum intensity, activity
    “That wild, speculative spirit peaked in 1929”
    synonyms: top out
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    bottom out
    reach the low point
    reach a high point
    type of:
    arrive at, attain, gain, hit, make, reach
    reach a destination, either real or abstract
  8. noun
    a brim that projects to the front to shade the eyes
    synonyms: bill, eyeshade, visor, vizor
    see moresee less
    type of:
    a circular projection that sticks outward from the crown of a hat
Commonly confused words

peak / peek / pique

Let's look at three homophones: peak, peek, and pique. Peak is a topmost point, such as a mountain peak, or to reach that point.

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Word Family

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