peak

peaksingular
peaksplural

1.名詞B2

釋義

the moment, level, or amount at which something is as high, strong, good, or intense as it can be.

例句

Hotel prices hit a peak during the New Year holiday week.

reach a peak for the highest level

At its peak, the bakery sold six hundred buns a day.

phrase: at its peak

同義詞

high point
broader and often used for a memorable or especially good moment
climax
often stresses the most exciting or dramatic point in a sequence
apex
more formal and common in technical or written contexts

反義詞

low point
the weakest or least successful stage
bottom
the lowest level on a scale or graph

文法句型

reach a peak

be at a peak

peak in + activity/value

用法筆記

Common with charts, prices, demand, or performance. Distinguish from noun 2, which is a physical mountain top rather than the highest stage of an activity or amount.

常見錯誤

❌Sales were on the top in July.

✅Sales were at their peak in July.

💡English usually uses 'at its/their peak' for the highest level of activity or value.

❌Her career was mountain peak in 2018.

✅Her career reached its peak in 2018.

💡this sense describes the best or strongest stage, not a mountain.

2.名詞B1

釋義

a mountain's sharp top, or a steep mountain marked by a narrow summit.

例句

Snow still covered the highest peak above the village in June.

mountain peak with physical location

By sunrise, the climbers could finally see the western peak.

peak as one top of a mountain range

同義詞

summit
often means the very top, especially in climbing contexts
top
less specific and can describe many kinds of upper part
crest
more often used for a ridge, wave, or hill line than a tall mountain

反義詞

base
the bottom part of a mountain
valley
the low land between hills or mountains

文法句型

a mountain peak

snow-covered peak

climb a peak

用法筆記

Usually refers to a mountain top you can see or climb. In some contexts it can mean the whole mountain, especially when speakers compare one peak with another.

常見錯誤

❌We reached the mountain's peak point at noon.

✅We reached the mountain peak at noon.

💡peak already includes the idea of the top point.

❌The photo shows the career peak of the hill.

✅The photo shows the peak of the hill.

💡do not mix this physical sense with noun 1 about success or activity.

3.名詞C1

釋義

the hard front flap on a cap, which helps keep sun out of your eyes.

例句

Leo pulled down the peak of his cap against the sun.

the peak of a cap

Rain dripped from the cap's peak onto Mia's glasses.

cap's peak with possessive form

同義詞

visor
common in American English for the projecting front part
bill
informal American term, especially for baseball caps

文法句型

the peak of a cap

pull down your peak

用法筆記

Mainly British English. It is used for caps with a firm front part, not for the wide round brim of a hat.

常見錯誤

❌Her sun hat had a wide peak.

✅Her sun hat had a wide brim.

💡peak is for the front part of a cap, while brim goes around a hat.

❌He lifted the hat peak on both sides.

✅He lifted the hat brim on both sides.

💡a peak does not run all the way around the hat.

peakpositive
peakercomparative
peakestsuperlative

1.形容詞B2

釋義

used for the period when the largest number of people are using a service or doing an activity.

例句

Trains are packed during peak hours on the red line.

peak hours for busiest travel time

The restaurant hires extra staff for peak season in July and August.

peak season before a time noun

同義詞

busy
broader and can describe people, places, or periods without the idea of the maximum point
rush-hour
narrower and mainly used for heavy traffic at the start or end of the workday

反義詞

off-peak
used for quieter times when fewer people are using something
quiet
general opposite for periods with little activity

文法句型

peak time

peak hours

peak season

用法筆記

Usually comes before time nouns such as hours, times, season, or period. Distinguish from adjective 2, which describes the height of a number or rate rather than the busiest part of a schedule.

常見錯誤

❌I took the bus at the peak level of traffic.

✅I took the bus at peak time.

💡this sense describes the busiest period, not a number.

❌July is a high season for this beach.

✅July is peak season for this beach.

💡peak season is the common fixed phrase.

2.形容詞B2

釋義

used for a figure, rate, speed, or amount that is at its highest point.

例句

The machine reached peak speed just before the final test.

peak + measurement noun

Doctors watched his peak heart rate during the race.

peak rate in a measured reading

同義詞

maximum
more formal and often used in technical writing or limits
highest
general and flexible, but less fixed in measurement phrases

反義詞

minimum
the lowest measured level
low
general opposite for smaller amounts or weaker rates

文法句型

peak level

peak rate

peak demand

peak speed

用法筆記

Common before words for measurements or amounts, such as demand, flow, rate, speed, or temperature. Distinguish from adjective 1, which focuses on the busiest time period rather than the top figure itself.

常見錯誤

❌Peak customers come here after work.

✅Peak customer numbers come here after work.' / 'This is peak time after work.

💡this sense needs a noun for the measured level or amount.

❌The store stays open in peak level.

✅The store stays open at peak levels of demand.

💡use this sense with levels, rates, or amounts.

3.形容詞C1

釋義

used to say that something has become so widely copied or noticed that it now feels tired, annoying, or no longer cool.

例句

By 2024, beige coffee shops felt peak after three opened nearby.

informal: be peak after copying

That slogan is peak office humor now, not fresh at all.

peak used to show overdone fashion

同義詞

overdone
plain and widely understood, without the slang tone
played out
informal and close in meaning, especially for trends that no longer feel fresh
stale
broader and can describe ideas, jokes, or styles that feel old

反義詞

fresh
still feels new and interesting
original
not copied by everyone else

文法句型

peak + trend/thing

be peak

用法筆記

A strongly informal comment on trends, jokes, or styles. It usually suggests not just popularity but a turning point where the speaker now finds the thing tired or embarrassing.

常見錯誤

❌This jacket is peak because many people like it.

✅This jacket is peak now because everyone copied it.

💡this sense is negative; it means the popularity has gone too far.

❌We had peak sales in June, so June was peak.

✅We had peak sales in June.

💡adjective 3 is about trends becoming overdone, not about numbers reaching the top.

peak — noun

1. the moment, level, or amount at which something is as high, strong, good, or int

文法句型

用法筆記

常見錯誤

2. a mountain's sharp top, or a steep mountain marked by a narrow summit.

文法句型

用法筆記

常見錯誤

3. the hard front flap on a cap, which helps keep sun out of your eyes.

文法句型

用法筆記

常見錯誤

peak — adjective

1. used for the period when the largest number of people are using a service or doi

文法句型

用法筆記

常見錯誤

2. used for a figure, rate, speed, or amount that is at its highest point.

文法句型

用法筆記

常見錯誤

3. used to say that something has become so widely copied or noticed that it now fe

文法句型

用法筆記

常見錯誤

peak — verb

1. to rise until you arrive at the highest level, strongest point, or best stage.

文法句型

用法筆記

常見錯誤