固
gù HSK4

to become solid

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approved by Marcus Ngai · Oct 22, 2026, 02:47 AM · Reviewed by Marcus Ngai on Oct 22, 2026, 02:47 AM

Fixed structure for consistency

Changed fields: hint

Originally written as 古. Phonosemantic compound. 囗 represents the meaning and 古 represents the sound.

Components

囗
囗 Meaning component
wéi, guó surround

Alludes to sturdy walls.

古
古 SoundMeaning component
gǔ old

Character Evolution

Bronze form
Bronze Late Warring States ~250 BC
Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Shuowen ~100 AD
Clerical form
Clerical Qin 221-206 BC
Clerical form
Clerical Western Han 202 BC-9 AD
Clerical form
Clerical Eastern Han 25-220 AD
Regular Modern

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-SagartkuH[k]ˤa-s fortified, secure

說文解字

《說文》：“固，四塞也。从囗，古聲。”

Sources

Character origin
漢語多功能字庫
Readings & variants
Unicode
Historical pronunciations
Baxter-Sagart
Historical images
Academia Sinica
Etymology
Shuowen Jiezi (說文解字)