# regularity

/ˌɹɛɡjəˈɫɛɹəti/ (US) · /ɹˌɛɡjuːlˈæɹɪti/ (UK)

Source: https://englishreference.com/word/regularity
Updated: 2026-08-27

## Senses

### 1. consistent timing

noun · CEFR B2

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

For teachers: 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'.

### 2. uniformity of shape or form

noun · CEFR C1 · Formal

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

For teachers: 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.

### 3. mathematical smoothness

noun · CEFR C2 · Technical

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

For teachers: 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.

## Examples

- He exercises with great regularity every morning.
- The bus service is praised for its regularity, as vehicles arrive at the station every ten minutes without fail.
- While the individual movements of the dancers appeared chaotic, a certain regularity emerged when viewed from above, revealing a carefully choreographed geometric sequence.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.