peak
Pronunciation
/pik/

Definition & Meaning of "peak"in English

Peak
Grammatical Information
Animacy status
Inanimate
Composition
Simple
Countable
Plural form
peaks
Examples
The climbers reached the peak of Mount Everest after weeks of strenuous effort.
02

a mountain with a sharply pointed top

Examples
The team climbed the highest peak in the mountain range.
03

the stage or point of highest quality, activity, success, etc.

Examples
The athlete reached the peak of his career when he won the gold medal at the Olympics.
04

the topmost point on a graph that indicates the highest level reached during a progression or development

Examples
On the sales chart, the peak occurred in December, showing the highest number of transactions.
05

the brim of a hat or cap that shades the eyes

Dialectbritish flagBritish
visoramerican flagAmerican
Examples
He adjusted the peak of his baseball cap to block the glaring afternoon sun.
06

the narrow, sloping part at the front or back of a ship’s hold, used for cargo and balance

Examples
The ship 's peak was carefully inspected to ensure it could support the additional weight of the cargo.
to peak
01

to reach the highest level, point, or intensity

top out

Intransitive
to peak definition and meaning
Grammatical Information
Composition
Simple
Action verb
Regular
Present tense
peak
3rd person singular
peaks
Present participle
peaking
Past simple
peaked
Past participle
peaked
Examples
Energy consumption typically peaks during the summer months.
02

to cause something to reach its highest point or level

Transitive
Examples
The new marketing strategy peaked sales to unprecedented levels.
01

indicating the highest or maximum point or level of something

peak definition and meaning
Grammatical Information
Composition
Simple
relational
ungradable
Examples
During rush hour, traffic congestion reaches its peak level.
02

referring to the time or period when something is at its highest level of activity or intensity

Examples
Traffic was heavy during the peak hours, making the commute much longer.
03

unfortunate, unlucky, or bad

Dialectbritish flagBritish
Slang

What does "peak" mean in British slang?

The structure is a simple adjective borrowed from the literal meaning of the highest point, repurposed ironically to mean its opposite: the lowest or worst point. It is used in British Multicultural London English (MLE) and UK slang to mean unfortunate, unlucky, or bad, often describing a situation or outcome. People typically say "That's peak" or "Peak, I missed the bus." The term originated in early 2000s London street and grime culture, where "peak" came to describe something unfair or disappointing, and remains common in UK youth slang.

Examples
That's peak, man; you missed the last bus again.
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