U+1EE1 "ỡ" Latin Small Letter O with Horn and Tilde Unicode Character
Unicode Version 17.0
ỡ
U+1EE1 "ỡ" Latin Small Letter O with Horn and Tilde is a specialized character used in the Vietnamese alphabet to represent a specific vowel sound, formed by combining the base Latin letter O with a horn diacritic (a small hook added to the upper right) and a tilde diacritic above. This character is a distinct element in written Vietnamese, where the horn modifies the vowel's pronunciation to create a more central or rounded sound, while the tilde indicates a specific tonal contour, specifically the falling-rising tone. As part of the Unicode standard, it ensures consistent representation of Vietnamese text across digital platforms, preserving the language's complex diacritic system without relying on workarounds or font substitutions.
General Properties
| Code Point | U+1EE1 |
| Version Added | 1.1 |
| Name | Latin Small Letter O with Horn and Tilde |
| Block | Latin Extended Additional |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "ơ" U+01A1 Latin Small Letter O with Horn "̃" U+0303 Combining Tilde |
Encodings
| HTML Decimal Encoding | ỡ |
| HTML Hex Encoding | ỡ |
| UTF-8 Encoding | 0xE1 0xBB 0xA1 |
| UTF-16 Encoding | 0x1EE1 |
| UTF-32 Encoding | 0x00001EE1 |
| C/C++/Java Escape | \u1ee1 |
Unicode Properties
| NFC Quick Check | Yes |
| NFKC Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Lowercase | Yes |
| Simple Uppercase Code Point | "Ỡ" U+1EE0 Latin Capital Letter O with Horn and Tilde |
| Simple Titlecase Code Point | "Ỡ" U+1EE0 Latin Capital Letter O with Horn and Tilde |
| Uppercase Code Point | "Ỡ" U+1EE0 Latin Capital Letter O with Horn and Tilde |
| Titlecase Code Point | "Ỡ" U+1EE0 Latin Capital Letter O with Horn and Tilde |
| Cased | Yes |
| Changes When Casemapped | Yes |
| Changes When Titlecased | Yes |
| Changes When Uppercased | Yes |
| Script | Latin |
| Script Extensions | Latin |
| Indic Syllabic Category | Other |
| ID Start | Yes |
| XID Start | Yes |
| ID Continue | Yes |
| XID Continue | Yes |
| Alphabetic | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Alphabetic letter |
| Sentence Break | Lower |