忪 (zhōng): restless; agitated

Meanings

结果出来前，他心里忪然不安。

Jiéguǒ chūlái qián, tā xīn lǐ zhōng rán bù'ān.

Before the result came out his heart was restless and uneasy.

register

The 忪 reading meaning 'restless; agitated' is archaic and rarely seen in modern writing; the everyday reading is 忪 in 惺忪.

radical

忄 xīn

heart; feeling

Left side 忄 is the heart radical 心 in its side form, marking a state of mind or feeling — here grogginess.

phonetic

公 gōng

public; sound element

Right side 公 is the sound element; the reading sōng has drifted from the phonetic, as often happens in this series.

忪 zhōng