U+1EC8 "Ỉ" Latin Capital Letter I with Hook Above Unicode Character
Unicode Version 17.0
Ỉ
U+1EC8 "Ỉ" Latin Capital Letter I with Hook Above is a modified form of the Latin letter I used primarily in the Vietnamese alphabet, where it represents the high rising tone on the vowel "i" when written in the standard romanized script known as Quốc Ngữ. This character is formed by combining a base Latin capital I with a diacritical hook above, which is a small curved mark placed over the letter to indicate a specific tonal pronunciation distinct from other variations like the plain I or I with other marks. In digital text, it is encoded in the Unicode standard to ensure consistent representation across different platforms and devices, allowing for correct rendering of Vietnamese words such as "chỉ" meaning "only" or "finger."
General Properties
| Code Point | U+1EC8 |
| Version Added | 1.1 |
| Name | Latin Capital Letter I with Hook Above |
| Block | Latin Extended Additional |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "I" U+0049 Latin Capital Letter I "̉" U+0309 Combining Hook Above |
Encodings
| HTML Decimal Encoding | Ỉ |
| HTML Hex Encoding | Ỉ |
| UTF-8 Encoding | 0xE1 0xBB 0x88 |
| UTF-16 Encoding | 0x1EC8 |
| UTF-32 Encoding | 0x00001EC8 |
| C/C++/Java Escape | \u1ec8 |
Unicode Properties
| NFC Quick Check | Yes |
| NFKC Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Uppercase | Yes |
| Simple Lowercase Code Point | "ỉ" U+1EC9 Latin Small Letter I with Hook Above |
| Lowercase Code Point | "ỉ" U+1EC9 Latin Small Letter I with Hook Above |
| Simple Case Folding | "ỉ" U+1EC9 Latin Small Letter I with Hook Above |
| Case Folding | "ỉ" U+1EC9 Latin Small Letter I with Hook Above |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ỉ" U+1EC9 Latin Small Letter I with Hook Above |
| NFKC Simple Casefold | "ỉ" U+1EC9 Latin Small Letter I with Hook Above |
| 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 | Upper |