English Reference

Word

regularity

Phoneticsreg·u·lar·i·ty

US/ˌɹɛɡjəˈɫɛɹəti/

UK/ɹˌɛɡjuːlˈæɹɪti/

Definitions

01consistent timing

B2

n. the fact that something happens at the same time or speed every time.

n. the quality of occurring at fixed, uniform intervals of time or space.

“He visits his grandmother with great regularity, going every Sunday morning.”

“The trains arrived with such impressive regularity that the local residents began to set their watches by the sound of the engines.”

Usage

Often used with the preposition 'with', as in 'with regularity'.

Synonyms

consistencysteadinessrhythm

Antonyms

irregularityinconsistency

02uniformity of shape or form

C1

n. the quality of having a perfect or even shape or pattern.

n. the state of being symmetrical or following a consistent geometric or structural pattern.

“The architect admired the regularity of the columns along the front of the building.”

“The crystalline structure was defined by the perfect regularity of its molecular arrangement, which gave the gemstone its unique clarity.”

Formal

Synonyms

Antonyms

asymmetryunevenness

03mathematical smoothness

C2 · Math

n. a technical term for how smooth or predictable a mathematical solution is.

n. the degree of differentiability or integrability of a function or a solution to a differential equation.

“The professor explained the regularity of the wave equation during the lecture.”

“Proving the regularity of weak solutions remains a fundamental challenge in the study of non-linear partial differential equations.”

Technical

Synonyms

Antonyms

Real-World Examples

“Helicopter crashes have happened with increasing regularity in Kenya, which has a thriving tourism industry that depends on domestic carriers to ferry visitors to distant places like Mount Ololokwe.”
The Guardian · 19 Aug 2026

Etymology

Borrowed from Middle French regularite, from Old French regularite, from Late Latin rēgulāritās, rēgulāritātem, from rēgulāris; see regular. By surface analysis, regular + -ity.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

This entry

Level
B2 · Upper Intermediate
Frequency
Occasional
Updated

Scan code

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English Reference