恰 Origin — Chinese Character Wiki

qià HSK6

just

Original meaning: attentive, diligent

Phonosemantic compound. 忄 represents the meaning and 合 represents the sound.

Components

忄 Meaning component

xin, xīn heart

忄 is a component form of 心.

Change in meaning

忄 hints at the original meaning of 恰, "attentive, diligent", which is no longer the most common meaning of 恰 in modern Mandarin.

合 Sound component

hé to join

Change in sound

恰 and 合 don't sound similar in modern Mandarin due to historical phonetic changes. They were more similar in Middle Chinese.
恰 kæp
合 kop

Regular Modern

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	Middle Chinese	Old Chinese
Zhengzhang		kʰruːb
Unicode	kæp

《說文新附》：“恰，用心也。从心，合聲。”