U+0423 "У" Cyrillic Capital Letter U Unicode Character
U+0423 "У" Cyrillic Capital Letter U is a letter used in various Cyrillic alphabets, representing the vowel sound /u/, similar to the "oo" in the English word "boot." It is present in the alphabets of languages such as Russian, Ukrainian, Bulgarian, and Serbian, among others, and is typically positioned near the end of the alphabet, following the letter T. In standard Cyrillic typography, the uppercase "У" resembles an angled shape with two strokes meeting at the top and diverging downward, and it is derived from the earlier Glagolitic alphabet. Historically, its numeric value in the old Cyrillic numeral system was 400, and it serves as a foundational component for forming syllables and words in written Slavic and non Slavic languages that use the Cyrillic script.
General Properties
| Code Point | U+0423 |
| Version Added | 1.1 |
| Name | Cyrillic Capital Letter U |
| Block | Cyrillic |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
Encodings
| HTML Decimal Encoding | У |
| HTML Hex Encoding | У |
| UTF-8 Encoding | 0xD0 0xA3 |
| UTF-16 Encoding | 0x0423 |
| UTF-32 Encoding | 0x00000423 |
| C/C++/Java Escape | \u0423 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| East Asian Width | Ambiguous |
| Uppercase | Yes |
| Simple Lowercase Code Point | "у" U+0443 Cyrillic Small Letter U |
| Lowercase Code Point | "у" U+0443 Cyrillic Small Letter U |
| Simple Case Folding | "у" U+0443 Cyrillic Small Letter U |
| Case Folding | "у" U+0443 Cyrillic Small Letter U |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "у" U+0443 Cyrillic Small Letter U |
| NFKC Simple Casefold | "у" U+0443 Cyrillic Small Letter U |
| Script | Cyrillic |
| Script Extensions | Cyrillic |
| 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 |