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Seal Warring States (Chu) 475-221 BC 
Seal Shuowen ~100 AD 
Clerical Western Jin 266-316 AD Regular Modern
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Components
Character Evolution
Historical Pronunciations
| Middle Chinese | Old Chinese | Gloss | |
|---|---|---|---|
| Baxter-Sagart | thanX | [tʰ]ˤa[n]ʔ | level, at ease |
說文解字
《說文》：“坦，安也。从土，旦聲。”
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)