# Ư

Ư (lowercase ư) is one of the 12 Vietnamese language vowels. It represents the Vietnamese sound [ɨ].
As with most special Vietnamese letters, this letter is not well-supported by fonts and is often typed as either ⟨u+⟩ or ⟨u*⟩. The VIQR standard is ⟨u+⟩.
On the Windows default Vietnamese keyboard Ư can be found on where the [ key is on a US English keyboard layout.
Because Vietnamese is a tonal language this letter may optionally have any one of the five tonal symbols above or below it.
* Ừ ừ
* Ứ ứ
* Ử ử
* Ữ ữ
* Ự ự
Ơ and Ư were in the past used for Thai Romanization, Ơ being removed in the 1939 system and Ư lasting up until the 1968 system. Both are now written with digraphs, oe and ue.

## Character mappings

Character information :
| Preview | Ư | Ư | ư | ư | Ừ | Ừ | ừ | ừ |
| Unicode name | LATIN CAPITAL LETTER U WITH HORN | LATIN CAPITAL LETTER U WITH HORN | LATIN SMALL LETTER U WITH HORN | LATIN SMALL LETTER U WITH HORN | LATIN CAPITAL LETTER U WITH HORN AND GRAVE | LATIN CAPITAL LETTER U WITH HORN AND GRAVE | LATIN SMALL LETTER U WITH HORN AND GRAVE | LATIN SMALL LETTER U WITH HORN AND GRAVE |
| Encodings | decimal | hex | dec | hex | dec | hex | dec | hex |
| Unicode | 431 | U+01AF | 432 | U+01B0 | 7914 | U+1EEA | 7915 | U+1EEB |
| UTF-8 | 198 175 | C6 AF | 198 176 | C6 B0 | 225 187 170 | E1 BB AA | 225 187 171 | E1 BB AB |
| Numeric character reference | &#431; | &#x1AF; | &#432; | &#x1B0; | &#7914; | &#x1EEA; | &#7915; | &#x1EEB; |
| VISCII | 191 | BF | 223 | DF | 187 | BB | 215 | D7 |
Character information :
| Preview | Ứ | Ứ | ứ | ứ | Ử | Ử | ử | ử |
| Unicode name | LATIN CAPITAL LETTER U WITH HORN AND ACUTE | LATIN CAPITAL LETTER U WITH HORN AND ACUTE | LATIN SMALL LETTER U WITH HORN AND ACUTE | LATIN SMALL LETTER U WITH HORN AND ACUTE | LATIN CAPITAL LETTER U WITH HORN AND HOOK ABOVE | LATIN CAPITAL LETTER U WITH HORN AND HOOK ABOVE | LATIN SMALL LETTER U WITH HORN AND HOOK ABOVE | LATIN SMALL LETTER U WITH HORN AND HOOK ABOVE |
| Encodings | decimal | hex | dec | hex | dec | hex | dec | hex |
| Unicode | 7912 | U+1EE8 | 7913 | U+1EE9 | 7916 | U+1EEC | 7917 | U+1EED |
| UTF-8 | 225 187 168 | E1 BB A8 | 225 187 169 | E1 BB A9 | 225 187 172 | E1 BB AC | 225 187 173 | E1 BB AD |
| Numeric character reference | &#7912; | &#x1EE8; | &#7913; | &#x1EE9; | &#7916; | &#x1EEC; | &#7917; | &#x1EED; |
| VISCII | 186 | BA | 209 | D1 | 188 | BC | 216 | D8 |
Character information :
| Preview | Ữ | Ữ | ữ | ữ | Ự | Ự | ự | ự |
| Unicode name | LATIN CAPITAL LETTER U WITH HORN AND TILDE | LATIN CAPITAL LETTER U WITH HORN AND TILDE | LATIN SMALL LETTER U WITH HORN AND TILDE | LATIN SMALL LETTER U WITH HORN AND TILDE | LATIN CAPITAL LETTER U WITH HORN AND DOT BELOW | LATIN CAPITAL LETTER U WITH HORN AND DOT BELOW | LATIN SMALL LETTER U WITH HORN AND DOT BELOW | LATIN SMALL LETTER U WITH HORN AND DOT BELOW |
| Encodings | decimal | hex | dec | hex | dec | hex | dec | hex |
| Unicode | 7918 | U+1EEE | 7919 | U+1EEF | 7920 | U+1EF0 | 7921 | U+1EF1 |
| UTF-8 | 225 187 174 | E1 BB AE | 225 187 175 | E1 BB AF | 225 187 176 | E1 BB B0 | 225 187 177 | E1 BB B1 |
| Numeric character reference | &#7918; | &#x1EEE; | &#7919; | &#x1EEF; | &#7920; | &#x1EF0; | &#7921; | &#x1EF1; |
| VISCII | 255 | FF | 230 | E6 | 185 | B9 | 241 | F1 |