U+1EF1 "ự" Latin Small Letter U with Horn and Dot Below Unicode Character

U+1EF1 "ự" Latin Small Letter U with Horn and Dot Below is a specialized glyph used in the Vietnamese alphabet to represent a distinct vowel sound. It is formed by adding a horn (a small hook attached to the top right of the letter) and a dot below the standard letter U, which together indicate a specific tonal and phonetic quality in the Vietnamese language. This character is part of the Latin Extended Additional block and is primarily employed in the writing of Vietnamese, where it appears in words that require the combination of the "U with horn" vowel and the low, heavy tone marked by the dot below.

General Properties

Code Point	U+1EF1
Version Added	1.1
Name	Latin Small Letter U with Horn and Dot Below
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+0323 Combining Dot Below

Encodings

HTML Decimal Encoding	ự
HTML Hex Encoding	ự
UTF-8 Encoding	0xE1 0xBB 0xB1
UTF-16 Encoding	0x1EF1
UTF-32 Encoding	0x00001EF1
C/C++/Java Escape	\u1ef1

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	"Ự" U+1EF0 Latin Capital Letter U with Horn and Dot Below
Simple Titlecase Code Point	"Ự" U+1EF0 Latin Capital Letter U with Horn and Dot Below
Uppercase Code Point	"Ự" U+1EF0 Latin Capital Letter U with Horn and Dot Below
Titlecase Code Point	"Ự" U+1EF0 Latin Capital Letter U with Horn and Dot Below
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