Reversed r with fishhook (ɿ) is the IPA Extensions character at Unicode U+027F (LATIN SMALL LETTER REVERSED R WITH FISHHOOK). It is used in phonetic and linguistic notation. There is no named HTML entity. Despite the legacy URL slug uppercase-j-reverse-fishhook, this is a lowercase IPA letter — not an uppercase J.
Remember
Character ɿ
Unicode U+027F
Named entity (none)
Hex entity ɿ
Decimal ɿ
CSS escape \027F
Not the same ɾ · r · J
Hex, decimal, CSS, and a typed character all produce the same glyph: ɿ. Prefer ɿ in HTML markup. Do not confuse it with r with fishhook (U+027E) or plain r.
Some fonts omit U+027F. Prefer fonts that cover IPA Extensions (U+0250–U+02AF), such as Noto Sans or Charis SIL.
CSS vs HTML
Do not mix escapes
\027F belongs in CSS strings. ɿ / ɿ belong in HTML.
Plain r
Not a substitute for plain r
Do not use ɿ for ordinary spelling of r. Reserve it for phonetic transcription.
Compatibility
Browser Support
Reversed r with fishhook (U+027F) and its entity forms (ɿ, ɿ, CSS \\027F) are supported in all mainstream browsers when the page is UTF-8 and the font covers IPA Extensions.
✓ Universal support
Reversed R with Fishhook (ɿ)
Encode with hex, decimal, CSS escape, or type the character — same Unicode code point everywhere.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+027F / entitiesFull support
Bottom line: Prefer ɿ in HTML text. Use ɿ as an equivalent, and \\027F only inside CSS content. Glyph display depends on IPA font coverage.
Remember
Key Takeaways
Unicode: this letter is U+027F (decimal 639) — glyph ɿ.
HTML: use ɿ / ɿ — no named entity.
CSS: use \027F inside content for generated text.
Watch out: ɿ ≠ ɾ ≠ plain r · URL slug ≠ uppercase J.
One line:U+027F → ɿ / ɿ / CSS \027F (no named entity).
Frequently Asked Questions
Use ɿ (hex), ɿ (decimal), or the CSS escape \027F in content. You can also type ɿ directly in UTF-8 HTML. There is no named HTML entity for U+027F.
U+027F (LATIN SMALL LETTER REVERSED R WITH FISHHOOK). Hex 027F, decimal 639. It belongs to IPA Extensions (U+0250–U+02AF).
No. HTML5 does not define a named entity for this character. Use ɿ or ɿ instead.
No. Despite the legacy URL /html/entity/uppercase-j-reverse-fishhook, the character is lowercase IPA reversed r with fishhook (U+027F), not a capital J.
U+027F (ɿ) is reversed r with fishhook. U+027E (ɾ) is r with fishhook — the IPA alveolar tap/flap. They look similar in some fonts but are different code points.
HTML entities (ɿ or ɿ) go in markup. The CSS escape \027F is used in stylesheets (usually in the content property of ::before/::after). Both render ɿ.
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Did you know?
Reversed r with fishhook is Unicode U+027F (decimal 639) — glyph ɿ (LATIN SMALL LETTER REVERSED R WITH FISHHOOK) in IPA Extensions. HTML5 has no named entity — use ɿ / ɿ. Do not confuse it with r with fishhook (U+027E). The URL slug is legacy — this is not an uppercase J.