“Regularized” or “Regularised”—What's the difference?

“Regularized” or “Regularised”

Language

Regularized and regularised are both English terms.

Usage

Regularized is predominantly used in 🇺🇸 American (US) English (en-US) while regularised is predominantly used in 🇬🇧 British English (used in UK/AU/NZ) (en-GB).

In terms of actual appearance and usage, here's a breakdown by country, with usage level out of 100 (if available) 👇:

Term	US	UK	India	Philippines	Canada	Australia	Liberia	Ireland	New Zealand	Jamaica	Trinidad & Tobago	Guyana
regularized	98	29	40	100	100	58	0	0	0	0	0	0
regularised	2	71	60	0	0	42	0	0	0	0	0	0

In the United States, there is a preference for "regularized" over "regularised" (98 to 2).
In the United Kingdom, there is a 71 to 29 preference for "regularised" over "regularized".
In India, there is a 60 to 40 preference for "regularised" over "regularized".
In the Philippines, there is a preference for "regularized" over "regularised" (100 to 0).
In Canada, there is a preference for "regularized" over "regularised" (100 to 0).
In Australia, there is a preference for "regularized" over "regularised" (58 to 42).
In Liberia, there is not enough data to determine a preference between "regularized" and "regularised".
In Ireland, there is not enough data to determine a preference between "regularized" and "regularised".
In New Zealand, there is not enough data to determine a preference between "regularized" and "regularised".
In Jamaica, there is not enough data to determine a preference between "regularized" and "regularised".
In Trinidad & Tobago, there is not enough data to determine a preference between "regularized" and "regularised".
In Guyana, there is not enough data to determine a preference between "regularized" and "regularised".

Examples

Below, we provide some examples of when to use regularized or regularised with sample sentences.

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Examples in Context

Examples of “regularized”

…used for dancing to be regularized into strict tempo despite the…
…well-known learning algorithms such as regularized least squares and support vector
Regularized long-wave equation, a model for…
…coin mints, but was first regularized under Hormizd.
…ownership had still not been regularized.
…a closed regular set or regularized by taking the closure of…
…"on-the-job" efforts, was systematized and regularized.
…and proper nouns became more regularized, perhaps partly to distinguish new…
…Feynman propagators to create a regularized Feynman series.
…solids defined via combinations of regularized boolean operations cannot necessarily be…

Examples of “regularised”

…the number of teams was regularised to six for each tournament,…
…House of Commons was progressively regularised.
…game became more organised and regularised.
…of Niger, Kokawa has become regularised to the West African standard.
…to obtain fire clearance, as regularised buildings were exempted.
…welcomed Gregorios Abdal Jaleel, who regularised the canonical ordination of Mar…
…(subjunctive), which were reanalysed and regularised differently in the various daughter
…grazing regime will become more regularised and will be of high
…which are only interpreted and regularised by a geometric ornamental convention.
…over time and evolved a regularised set of features – were…

(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license.)

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