Rationalization is predominantly used in American (US) English (en-US)
while rationalisation is predominantly used in British English (used in UK/AU/NZ) (en-GB).
Of the 12 countries below, 5 prefer “rationalization” and 4 prefer “rationalisation”. Usage levels are out of 100; the more common spelling in each country is in bold.
| Country | rationalization | rationalisation | Preference |
|---|---|---|---|
| United States | 98 | 2 | “rationalization” |
| United Kingdom | 28 | 72 | “rationalisation” |
| India | 55 | 45 | “rationalization” |
| Philippines | 98 | 2 | “rationalization” |
| Canada | 84 | 16 | “rationalization” |
| Australia | 28 | 72 | “rationalisation” |
| Liberia | 0 | 0 | Not enough data |
| Ireland | 42 | 58 | “rationalisation” |
| New Zealand | 38 | 62 | “rationalisation” |
| Jamaica | 100 | 0 | “rationalization” |
| Trinidad & Tobago | 0 | 0 | Not enough data |
| Guyana | 0 | 0 | Not enough data |
Real sentences for each spelling. Hover an example to copy it.
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