U+FA90 "敖" CJK Compatibility Ideograph-# Unicode Character

U+FA90 "敖" CJK Compatibility Ideograph-# is a seldom used glyph from the CJK Compatibility Ideographs block, which was encoded primarily for roundtrip compatibility with older East Asian character set standards rather than for general modern use. This specific character represents a variant or simplified form of an existing CJK unified ideograph, often corresponding to a character used in Japanese or Chinese text conversion processes. As a compatibility ideograph, its inclusion in Unicode ensures that documents created in legacy encoding systems can be accurately mapped and displayed without data loss, though it is generally not recommended for new text creation in favor of its unified counterpart. Its practical application is therefore largely archival and technical, supporting the faithful preservation of historic digitized texts.

General Properties

Code Point	U+FA90
Version Added	4.1
Name	CJK Compatibility Ideograph-#
Block	CJK Compatibility Ideographs
General Category	Other Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Canonical
Decomposition Mapping	"敖" U+6556 CJK Unified Ideograph-#

Encodings

HTML Decimal Encoding	敖
HTML Hex Encoding	敖
UTF-8 Encoding	0xEF 0xAA 0x90
UTF-16 Encoding	0xFA90
UTF-32 Encoding	0x0000FA90
C/C++/Java Escape	\ufa90

Unicode Properties

Full Composition Exclusion	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Ideographic
East Asian Width	Wide
Changes When NFKC Casefolded	Yes
NFKC Casefold	"敖" U+6556 CJK Unified Ideograph-#
NFKC Simple Casefold	"敖" U+6556 CJK Unified Ideograph-#
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

Unihan Properties

kCompatibilityVariant	U+6556
kIRG_KPSource	KP1-480E
kRSUnicode	66.7
kTotalStrokes	10