The English Oracle

Was "an unicorn" ever correct?

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Chapters
00:00 Was &Quot;An Unicorn&Quot; Ever Correct?
00:18 Accepted Answer Score 29
00:57 Thank you

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Full question
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Tags
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#avk47



ACCEPTED ANSWER

Score 29


No, it's not a typo. Words starting with u started with a diphthong until the 18th century. This was part of the Great Vowel Shift. The vowel started changing from /yː/ (its original vowel in French1) in Middle English, migrated through several diphthongs, and ended up at /juː/ sometime around the 18th century.

See Ngram.

1 At least the upper classes, who were descended from French-speaking Normans, used the original French vowel /y/ for French words spelled with 'u' in Early Middle English. I don't know whether there's any evidence for how the lower classes pronounced this.