忽

忽 U+5FFD, 忽 CJK UNIFIED IDEOGRAPH-5FFD ← 忼 [U+5FFC] CJK Unified Ideographs 忾 → [U+5FFE]

忽 (Kangxi radical 61, 心+4, 8 strokes, cangjie input 心竹心 (PHP), four-corner 2733₂, composition ⿱勿心)

• 𬾠, 唿, 𡝲, 惚, 㧾, 淴, 㺀, 𣇤, 𪲨, 𬊡, 𤙹, 𤦏, 𦜩, 𥇰, 𦁕(𰬦), 𦖟, 𰃒, 𧩓, 鍃,(锪), 𧇰, 𩋚, 䬍(𬲀), 𪍃, 𫜚
• 𢽨, 𪯏, 𭞿, 𪂒, 𫻜, 𡱽, 䓤, 䨚, 𩭳, 𫆒

• Kangxi Dictionary: page 378, character 34
• Dai Kanwa Jiten: character 10405
• Dae Jaweon: page 707, character 5
• Hanyu Da Zidian (first edition): volume 4, page 2274, character 9
• Unihan data for U+5FFD

Historically and academically considered a phono-semantic compound (形聲／形声, OC *hmɯːd) : phonetic 勿 (OC *mɯd) + semantic 心 (“heart”). Incorrectly colloquially explained as an ideogrammic compound (會意／会意) : 勿 (“not”) + 心 (“heart”).

simp. and trad.		忽
alternative forms		芴

忽

1. suddenly; abruptly
2. to neglect; to ignore
3. (dated) the number 10^-5; 1/100000th of certain units of measure

   忽米  ―  hūmǐ  ―  centimillimeter

   1. (Mainland China) traditional unit of length equal to 1/100000th of 寸 (cùn, “Chinese inch, ¹/₃ decimeter”) ≈ 0.33 micron
   2. (Mainland China) traditional unit of weight equal to 1/100000th of 錢／钱 (qián, “mace”) = 50 microgram
4. a surname

Chinese historical small numbers
Value	Character	Notes
10-1	分 (fèn)	Still in use. SI prefix deci-.
10-2	厘 (lí), 釐 (lí)	Still in use. SI prefix centi-.
10-3	毫 (háo)	Still in use. SI prefix milli-. Also 毛 (máo).
10-4	絲／丝 (sī)	Rarely used today.
	秒 (miǎo)	Obsolete, only in ancient texts.
10-5	忽 (hū)	Rarely used today.
10-6	微 (wēi)	Still in use. SI prefix micro-.
10-7	纖／纤 (xiān)	Obsolete.
10-8	沙 (shā)	Obsolete.
10-9	塵／尘 (chén)	Obsolete. 納／纳 (nà) and 奈 (nài) are used for nano-.
10-10	埃 (āi)	Obsolete. In modern use, the character for angstrom (10-10 m).
10-11	渺 (miǎo)	Obsolete.
10-12	漠 (mò)	Obsolete. 皮 (pí) is used for SI prefix pico-.

• “忽”, in 漢語多功能字庫 (Multi-function Chinese Character Database)‎^[2], 香港中文大學 (the Chinese University of Hong Kong), 2014–

simp. and trad.		忽
alternative forms		窟

忽 (Cantonese)

1. place
2. part

Possibly related to Middle Korean 골〯 (kwǒl) and Middle Korean ᄀᆞ옳 (kòwòlh).^[1] A possible Wanderwort; see Proto-Uralic *kota for more.^[2]

忽 (*kuru or *kolo) (Records of the Three Kingdoms 溝漊).^[1][2]

1. castle, fortress

(Jinmeiyō kanji)

1. in a moment
2. instantly
3. all of a sudden
4. neglect
5. disregard

• On (unclassified): こつ (kotsu)
• Kun: ゆるがせ (yurugase, 忽せ)、たちまち (tachimachi, 忽ち)

忽 • (hol) (hangeul 홀)

1. This term needs a translation to English. Please help out and add a translation, then remove the text {{rfdef}}.

忽: Hán Nôm readings: hốt

1. This term needs a translation to English. Please help out and add a translation, then remove the text {{rfdef}}.