U+1EEF "ữ" Latin Small Letter U with Horn and Tilde Unicode Character

U+1EEF "ữ" Latin Small Letter U with Horn and Tilde is a specific diacritic combination used in the Vietnamese alphabet to represent a distinctive vowel sound. This character is formed by adding a horn diacritic to the base letter U, which typically indicates a rounded or labialized pronunciation, and then combining it with a tilde above, which marks the ngã or "rising" tone in Vietnamese phonology. Altogether, "ữ" represents a mid-rising, creaky tone version of the vowel sound often transcribed as /ɨ/ or /ɯ/, and it appears in essential Vietnamese words like "từ" meaning "word" or "chữ" meaning "letter" or "script."

General Properties

Code Point	U+1EEF
Version Added	1.1
Name	Latin Small Letter U 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	"ư" U+01B0 Latin Small Letter U with Horn "̃" U+0303 Combining Tilde

Encodings

HTML Decimal Encoding	ữ
HTML Hex Encoding	ữ
UTF-8 Encoding	0xE1 0xBB 0xAF
UTF-16 Encoding	0x1EEF
UTF-32 Encoding	0x00001EEF
C/C++/Java Escape	\u1eef

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	"Ữ" U+1EEE Latin Capital Letter U with Horn and Tilde
Simple Titlecase Code Point	"Ữ" U+1EEE Latin Capital Letter U with Horn and Tilde
Uppercase Code Point	"Ữ" U+1EEE Latin Capital Letter U with Horn and Tilde
Titlecase Code Point	"Ữ" U+1EEE Latin Capital Letter U 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