HTML Entity for Undertie (‿)
What You'll Learn
How to display the undertie (‿) in HTML using hexadecimal, decimal, and CSS escape methods. This character is U+203F (UNDERTIE) in the General Punctuation block (U+2000–U+206F)—a typographic symbol used in linguistic notation and phonetic transcription to connect characters below the baseline.
Render it with ‿, ‿, or CSS escape \203F. There is no named HTML entity for this symbol. Compare ‾ (overline, U+203E) or _ (underscore, U+005F) for related characters.
⚡ Quick Reference — Undertie
U+203FGeneral Punctuation block
‿Hexadecimal reference
‿Decimal reference
—Use numeric codes only
Name Value
──────────── ──────────
Unicode U+203F
Hex code ‿
HTML code ‿
Named entity (none)
CSS code \203F
Related U+203E = overline (‾); U+005F = underscore (_)
Block General Punctuation (U+2000–U+206F)Complete HTML Example
A simple example showing ‿ using hexadecimal code, decimal HTML code, and a CSS content escape:
<!DOCTYPE html>
<html>
<head>
<style>
#point::after{
content: "\203F";
}
</style>
</head>
<body>
<p>Undertie (hex): ‿</p>
<p>Undertie (decimal): ‿</p>
<p id="point">Undertie (CSS): </p>
</body>
</html>🌐 Browser Support
U+203F is supported in modern browsers when rendered with a font that includes General Punctuation characters:
👀 Live Preview
See the undertie (‿) in linguistic and typographic contexts:
🧠 How It Works
Hexadecimal Code
‿ uses the Unicode hexadecimal value 203F to display the undertie. The x prefix indicates hexadecimal format.
Decimal HTML Code
‿ uses the decimal Unicode value 8255 to display the same character.
CSS Entity
\203F is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.
Same visual result
All three methods produce: ‿. Unicode U+203F in the General Punctuation block (U+2000–U+206F). No named HTML entity—use numeric codes in markup. Serve HTML as UTF-8.
Use Cases
The undertie (‿) is commonly used in:
Academic papers, language studies, and research documents.
IPA notation, linguistic analysis, and phonetics tutorials.
Font design, editorial content, and professional typesetting.
Annotated texts, scholarly works, and academic content.
Research documents and scholarly publications with notation.
Unicode and HTML entity reference guides for typographic symbols.
💡 Best Practices
Do
- Use
‿or‿consistently in markup - Use fonts that support General Punctuation (system UI, Segoe UI, Cambria)
- Add surrounding text or
aria-labelfor linguistic context - Pair ‿ with explanatory text in phonetic and annotation content
- Serve pages with UTF-8 (
<meta charset="utf-8">)
Don’t
- Expect a named entity—none exists for U+203F
- Confuse ‿ (undertie) with _ (underscore U+005F) or ‾ (overline U+203E)
- Use U+0203F or CSS
\0203F—the correct value is U+203F and\203F - Put CSS escape
\203Fin HTML text nodes - Assume all decorative fonts include General Punctuation characters
Key Takeaways
Two HTML numeric references render ‿
‿ ‿For CSS stylesheets, use the escape in the content property
\203FUnicode U+203F — UNDERTIE
General Punctuation block (U+2000–U+206F)
Three methods, one glyph — no named HTML entity
❓ Frequently Asked Questions
‿ (hex), ‿ (decimal), or \203F in CSS content. There is no named entity. All produce ‿.U+203F (UNDERTIE). General Punctuation block (U+2000–U+206F). Hex 203F, decimal 8255. A typographic character used in linguistic notation and phonetic transcription.‿ or ‿) go in markup. The CSS escape \203F is used in stylesheets, typically in the content property of pseudo-elements. Same visual result, different layers of the stack.‿ or ‿ in HTML.Explore More HTML Entities!
Discover 1500+ HTML character references — punctuation, linguistic symbols, math operators, and more.
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