Which is the proper spelling: "Adapter" or "adaptor"?

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Music by Eric Matyas
https://www.soundimage.org
Track title: Isolated

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Chapters
00:00 Which Is The Proper Spelling: &Quot;Adapter&Quot; Or &Quot;Adaptor&Quot;?
00:33 Accepted Answer Score 21
00:57 Answer 2 Score 11
01:42 Answer 3 Score 6
02:01 Answer 4 Score 3
02:27 Answer 5 Score 1
02:47 Thank you

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Full question
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Tags
#differences #orthography #suffixes #agentnounsuffix

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