U+5FEB "快" CJK Unified Ideograph-# Unicode Character

U+5FEB "快" CJK Unified Ideograph-# is a foundational Chinese character traditionally meaning "fast," "quick," or "rapid," and is also commonly used to express happiness or pleasure, as in the word "快乐" (kuài lè) for "happy." Composed of the radical "忄" (heart) on the left and "夬" (guài) on the right, its original form suggested a joyful heart or a sense of swift resolution. In modern usage, it appears in a wide range of contexts, from describing speed in phrases like "快速" (fast speed) to emotional states such as "愉快" (joyful). This character is encoded in the CJK Unified Ideographs block of Unicode, supporting its use across digital platforms for Chinese, Japanese, and Korean languages, where it retains similar meanings of quickness or delight.

General Properties

Code Point	U+5FEB
Version Added	1.1
Name	CJK Unified Ideograph-#
Block	CJK Unified Ideographs
General Category	Other Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right

Encodings

HTML Decimal Encoding	快
HTML Hex Encoding	快
UTF-8 Encoding	0xE5 0xBF 0xAB
UTF-16 Encoding	0x5FEB
UTF-32 Encoding	0x00005FEB
C/C++/Java Escape	\u5feb

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	Ideographic
East Asian Width	Wide
Script	Han
Script Extensions	Han
Indic Syllabic Category	Other
ID Start	Yes
XID Start	Yes
ID Continue	Yes
XID Continue	Yes
Alphabetic	Yes
Vertical Orientation	Upright
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	OLetter
Ideographic	Yes
Unified Ideograph	Yes

Unihan Properties

kBigFive	A7D6
kCCCII	213E22
kCNS1986	1-4A38
kCNS1992	1-4A38
kCangjie	PDK
kCantonese	faai3
kCihaiT	524.302
kCowles	651.5
kDaeJaweon	0705.160
kDefinition	rapid, quick, speedy, fast; soon
kEACC	213E22
kFanqie	苦夬
kFenn	482A
kFennIndex	265.07 266.01
kFourCornerCode	9503.0
kGB0	3176
kGB1	3176
kGradeLevel	1
kGSR	0312k
kHangul	쾌:0E
kHanYu	42278.110
kHanyuPinlu	kuài(1536) kuai(77)
kHanyuPinyin	42278.110:kuài
kHKGlyph	1300
kIICore	AGTJHKMP
kIRGDaeJaweon	0705.160
kIRGHanyuDaZidian	42278.110
kIRGKangXi	0377.290
kIRG_GSource	G0-3F6C
kIRG_HSource	HB1-A7D6
kIRG_JSource	J0-3277
kIRG_KPSource	KP0-EFE5
kIRG_KSource	K0-7661
kIRG_TSource	T1-4A38
kIRG_VSource	V1-5523
kJapanese	カイ ケ こころよい
kJoyoKanji	2010
kKoreanEducationHanja	2007
kTGH	2013:876
kJapaneseKun	KOKOROYOI
kJapaneseOn	KAI
kJis0	1887
kKangXi	0377.290
kKarlgren	440
kKorean	KHWAY
kLau	638
kMainlandTelegraph	1816
kMandarin	kuài
kMatthews	3547
kMeyerWempe	442
kMojiJoho	MJ011416
kMorohashi	10369
kNelson	1654
kPhonetic	337 667
kRSAdobe_Japan1_6	C+1399+61.3.4
kRSUnicode	61.4
kSBGY	386.36
kSMSZD2003Index	218.08
kSMSZD2003Readings	kuài粵faai3
kTaiwanTelegraph	1816
kTang	kuài
kTGHZ2013	200.160:kuài
kTotalStrokes	7
kUnihanCore2020	GHJKMPT
kVietnamese	khoái
kXerox	242:043
kXHC1983	0657.080:kuài