HSK 7-9
晃
huàng动
to sway; to shake; to rock; to wander about
小船随波浪左右晃个不停。
Xiǎo chuán suí bō làng zuǒ yòu huàng gè bù tíng.
The small boat kept swaying from side to side with the waves.
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Appears across levels (7-9) in the HSK 3.0 word list.