“Rationalize” or “Rationalise”

Language

Rationalize and rationalise are both English terms.

Usage

Rationalize is predominantly used in 🇺🇸 American (US) English (en-US) while rationalise 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
rationalize	99	20	54	100	97	22	0	32	27	0	0	0
rationalise	1	80	46	0	3	78	0	68	73	0	0	0

• In the United States, there is a preference for "rationalize" over "rationalise" (99 to 1).
• In the United Kingdom, there is a 80 to 20 preference for "rationalise" over "rationalize".
• In India, there is a preference for "rationalize" over "rationalise" (54 to 46).
• In the Philippines, there is a preference for "rationalize" over "rationalise" (100 to 0).
• In Canada, there is a preference for "rationalize" over "rationalise" (97 to 3).
• In Australia, there is a 78 to 22 preference for "rationalise" over "rationalize".
• In Liberia, there is not enough data to determine a preference between "rationalize" and "rationalise".
• In Ireland, there is a 68 to 32 preference for "rationalise" over "rationalize".
• In New Zealand, there is a 73 to 27 preference for "rationalise" over "rationalize".
• In Jamaica, there is not enough data to determine a preference between "rationalize" and "rationalise".
• In Trinidad & Tobago, there is not enough data to determine a preference between "rationalize" and "rationalise".
• In Guyana, there is not enough data to determine a preference between "rationalize" and "rationalise".

Examples

Below, we provide some examples of when to use rationalize or rationalise with sample sentences.

Trends

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