English Reference

Word

peaking

Phoneticspeak·ing

US/ˈpikɪŋ/

UK/pˈiːkɪŋ/

Definitions

01reaching a highest point

B2

v. reaching the highest level, value, or amount of something.

v. reaching a maximum point of intensity, volume, or value before a subsequent decline.

“The athlete is peaking at just the right time for the summer games.”

“Economists noted that inflation appeared to be peaking, suggesting that the central bank might pause its cycle of interest rate hikes.”

Synonyms

climaxingtopping out

Antonyms

bottoming out

02the act of reaching a maximum

C1

n. the process or moment of reaching a highest point.

n. the phenomenon or act of reaching a maximum level or capacity.

“The peaking of the river caused concern for those living in the valley.”

“The simultaneous peaking of demand across multiple sectors put an unprecedented strain on the national power grid.”

Academic

Synonyms

03looking sick

C2

adj. looking pale, thin, or unwell.

adj. appearing sickly, pale, or physically diminished, often due to illness or lack of sleep.

“You look a bit peaking today; did you get enough sleep last night?”

“After a week of heavy flu, he still looked remarkably peaking and was clearly not ready to return to the office.”

British English · Informal

Usage

Often spelled 'peaky' in modern usage, though 'peaking' appears in older texts or specific dialects.

Teaching tip

This sense is quite rare in American English; learners will mostly encounter it in British literature or informal speech.

Synonyms

Antonyms

Real-World Examples

“Across the study, we recorded daytime temperatures peaking between 88.7 and 97 degrees Fahrenheit (31.5 and 36.1 degrees Celsius).”
Phys.org · 25 Aug 2026
“Across the study, we recorded daytime temperatures peaking between 88.7 and 97 degrees Fahrenheit (31.5 and 36.1 Celsius).”
The Conversation · 25 Aug 2026
“The UK entered its third heatwave of the year this week with temperatures peaking at 35C .”
The Guardian · 11 Jul 2026

This entry

Level
B2 · Upper Intermediate
Frequency
Occasional
Updated

Scan code

englishreference.com/q/peaking

English Reference