U+0170 "Ű" Latin Capital Letter U with Double Acute Unicode Character
U+0170 "Ű" Latin Capital Letter U with Double Acute is a distinctive glyph used primarily in the Hungarian language, where it represents a long, rounded vowel sound. Visually, it consists of a standard Latin capital U topped with two acute accents stacked vertically, distinguishing it from the single acute found on letters like "Ú." In Hungarian orthography, this character appears in words such as "űr" meaning "space" or "void," and it is the uppercase counterpart to the lowercase "ű" (U+0171). The double acute accent indicates a lengthened version of the front rounded vowel /y/, which is a crucial phonemic contrast in Hungarian, as it differentiates between words like "tűz" (fire) and "túz" (to stuff). Beyond Hungarian, this letter is also adopted by some other languages, like the Chuvash language, to represent similar vowel sounds.
General Properties
| Code Point | U+0170 |
| Version Added | 1.1 |
| Name | Latin Capital Letter U with Double Acute |
| Unicode 1.0 Name | Latin Capital Letter U Double Acute |
| Block | Latin Extended-A |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "U" U+0055 Latin Capital Letter U "̋" U+030B Combining Double Acute Accent |
Encodings
| HTML Decimal Encoding | Ű |
| HTML Hex Encoding | Ű |
| UTF-8 Encoding | 0xC5 0xB0 |
| UTF-16 Encoding | 0x0170 |
| UTF-32 Encoding | 0x00000170 |
| C/C++/Java Escape | \u0170 |
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 | "ű" U+0171 Latin Small Letter U with Double Acute |
| Lowercase Code Point | "ű" U+0171 Latin Small Letter U with Double Acute |
| Simple Case Folding | "ű" U+0171 Latin Small Letter U with Double Acute |
| Case Folding | "ű" U+0171 Latin Small Letter U with Double Acute |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ű" U+0171 Latin Small Letter U with Double Acute |
| NFKC Simple Casefold | "ű" U+0171 Latin Small Letter U with Double Acute |
| 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 |