但是
dàn​shì HSK2

but

但 dàn only

Original meaning: bare-chested

Phonosemantic compound. 亻 represents the meaning and 旦 represents the sound. Based on the original meaning "bare-chested". The current meaning is a phonetic loan.

Components

亻
亻 Meaning component
rén person

亻 is a component form of 人.

Change in meaning
亻 hints at the original meaning of 但, "bare-chested", which is no longer the most common meaning of 但 in modern Mandarin.
旦
旦 Sound component
dàn dawn

Character Evolution

Oracle form
Oracle Bone ~1250-1000 BC
Bronze form
Bronze Late Warring States ~250 BC
Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Western Han 202 BC-9 AD
Seal form
Seal Western Han 202 BC-9 AD
Seal form
Seal Shuowen ~100 AD
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-SagartdanX[d]ˤa[n]ʔ only

說文解字

《說文》：“但，裼也。从人，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)

是 shì, shi is

Origin unclear. The bottom component 止 represents the sound.

Components

旦
旦 Unknown component
dàn dawn

The purpose of this component is unclear.

止
止 Sound component
zhǐ (foot), stop

Character Evolution

Bronze form
Bronze Mid Western Zhou ~900 BC
Bronze form
Bronze Late Western Zhou ~800 BC
Bronze form
Bronze Late Western Zhou ~800 BC
Bronze form
Bronze Early Spring and Autumn ~700 BC
Bronze form
Bronze Mid Spring and Autumn ~600 BC
Bronze form
Bronze Late Spring and Autumn ~500 BC
Bronze form
Bronze Qin 221-206 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 Warring States (Chu) 475-221 BC
Seal form
Seal Shuowen ~100 AD
Seal form
Seal Shuowen ~100 AD
Clerical form
Clerical Qin 221-206 BC
Clerical form
Clerical Eastern Han 25-220 AD
Clerical form
Clerical Eastern Han 25-220 AD
Clerical form
Clerical Eastern Han 25-220 AD
Regular Modern

Component uses

Sound (6 of 13 verified)

提题堤匙題缇醍鞮鳀隄緹鯷踶

Meaning (0 of 2 verified)

韪韙

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-SagartdzyeX[d]eʔ this

說文解字

《說文》：“是，直也。从日、正。昰，籀文是，从古文正。”

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)