姐弟
jiě​dì

elder sister and younger brother

姐 jie, jiě elder sister

Phonosemantic compound. 女 represents the meaning and 且 represents the sound.

Components

女
女 Meaning component
nǚ, nü woman
且
且 Sound component
qiě moreover

Character Evolution

Seal form
Seal Shuowen ~100 AD
Regular Modern

Historical Pronunciations

Old Chinese
Zhengzhangʔsjaːʔ

說文解字

《說文》：“姐，蜀謂母曰姐，淮南謂之社。从女，且聲。”

Sources

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

弟 dì, di younger brother

Original meaning: order

Pictograph of a rope neatly wrapped around a weapon handle. Based on the original meaning "orderly". The meaning later shifted to "next in sequence" (now written as 第) and "younger brother".

Character Evolution

Oracle form
Oracle Bone ~1250-1000 BC
Oracle form
Oracle Bone ~1250-1000 BC
Oracle form
Oracle Bone ~1250-1000 BC
Oracle form
Oracle Bone ~1250-1000 BC
Bronze form
Bronze Early Western Zhou ~1000 BC
Bronze form
Bronze Early Western Zhou ~1000 BC
Bronze form
Bronze Mid Spring and Autumn ~600 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 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 Western Han 202 BC-9 AD
Clerical form
Clerical Western Han 202 BC-9 AD
Clerical form
Clerical Western Han 202 BC-9 AD
Clerical form
Clerical Western Han 202 BC-9 AD
Clerical form
Clerical Eastern Han 25-220 AD
Regular Modern

Component uses

Sound (2 of 12 verified)

第递梯涕剃娣悌锑睇绨鹈鵜

Meaning (1 of 2 verified)

第悌

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-SagartdejXlˤəjʔ younger brother

說文解字

《說文》：“弟，韋束之次弟也。从古字之象。，古文弟，从古文韋省，丿聲。”

Sources

Character origin
季旭昇《說文新證》p.477-478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)