“Unrivaled” or “Unrivalled”—What's the difference?

Usage by country

Where each spelling is used

Of the 12 countries below, 4 prefer “unrivaled” and 4 prefer “unrivalled”. Usage levels are out of 100; the more common spelling in each country is in bold.

Usage level out of 100 (if available).
Country	unrivaled	unrivalled	Preference
United States	95	5	“unrivaled”
United Kingdom	31	69	“unrivalled”
India	42	58	“unrivalled”
Philippines	86	14	“unrivaled”
Canada	81	19	“unrivaled”
Australia	34	66	“unrivalled”
Liberia	0	0	Not enough data
Ireland	35	65	“unrivalled”
New Zealand	64	36	“unrivaled”
Jamaica	0	0	Not enough data
Trinidad & Tobago	0	0	Not enough data
Guyana	0	0	Not enough data

Usage

Examples in context

Real sentences for each spelling. Hover an example to copy it.

“unrivaled”

…hunting and fishing that is unrivaled in this part of Ontario.
…enjoy the gratification of such unrivaled scenery."
…scene," stating that "the undisputed, unrivaled, peerless Detroit Queen of the…
…20th century, as the largely unrivaled imperial superpower that it is
In acquiring the unrivaled "battleaxe of fiery splendour and…
…before compiled or mapped, providing unrivaled historical and geographic coverage.
…asserted: "His work is almost unrivaled in popularity"
Unrivaled (May 10, 2016)
Neo Universe sired Unrivaled (Satsuki Shō), Logi Universe and…
…us, in connection with our unrivaled harbor;

“unrivalled”

Almost unrivalled for his ability to paint…
…set up to give a unrivalled Catholic education to boys of…
…is the largest in town, unrivalled by the likes of Spider…
…winner Aleksey Sokolov and went unrivalled in his first race over…
He was an unrivalled educator, one of the best…
…whole, as it has had unrivalled success as a factor in…
…of Mount Gelai is possibly unrivalled anywhere in the world today.
…mosques "lofty and deeply−recessed portals," "unrivalled for grandeur and appropriateness," are…
…the two colleagues acquired an unrivalled knowledge.
…by the choreographer Marius Petipa, unrivalled Maître de Ballet of the…

Examples are Wikipedia snippets under the CC ShareAlike 3.0 license.

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