Character Contained In References Comments
Simplified Traditional Ancient forms Archaic forms
traditional formhandwritten form

Variants
Phonetic
Semantic
Apparent
古 囗 ⿴囗古
Mandarin
gu4
English
Definitions
solid; hard; strong; sure; be sure; to become solid; obstinate disease; restrain; solidify; to stop; strength
Mnemonic
An enclosure 囗 that is ancient 古
Etymology
Notes
A very old walled fortification would certainly be solid