What ᵜ means
In UPA, it marks a very short sound or transition vowel.
The Uralic Phonetic Alphabet (UPA), also called Finno-Ugric transcription, is a specialist system for writing pronunciation and comparing Uralic languages. Linguist Eemil Nestor Setälä proposed it in 1901; later treatments appeared in 1939 and 1977. In UPA, superscripts mark very short sounds or transition vowels, so the raised position carries information.
The word ain in ᵜ’s name echoes the name of Arabic letter ع (ʿayn). This is a naming link, not a universal pronunciation: UPA assigns ᵜ its own role.
How do I type ᵜ?
Use a Unicode input method, not a superscript styling command.
For HTML markup, write ᵜ; in a JavaScript or JSON string, use \u1D5C.
Microsoft Word: type 1D5C, then press Alt+X. Linux GTK: press Ctrl+Shift+U, type 1d5c, then press Enter or Space. On macOS with Unicode Hex Input enabled, hold Option and type 1D5C.
As a spacing modifier, ᵜ’s position beside a base letter can carry transcription information. A cleanup process called NFKC compatibility normalization can change it to unraised ᴥ. Some fonts draw it too lightly or omit it, so check the underlying text if it looks wrong.
Technical and archival: ᵜ signals phonetic transcription, not decorative small type.
Treat the raised form as part of the notation; styling it as tiny text can erase a sound distinction.
Don't confuse it with
2Questions people ask
2ᵜ vs ᴥ: why can it change?
Normalization. A process called NFKC compatibility normalization can map ᵜ to ᴥ, removing the raised distinction. Preserve the original text when that distinction matters.
Why does ᵜ look thin or disappear?
Font rendering. Some fonts draw this modifier unusually lightly or lack the glyph. The text can still contain ᵜ; check the underlying character or use a font that supports Phonetic Extensions.
How to type ᵜ
ᵜ\1D5CCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.