HSK 4
困
kùn形（动）
to trap; to surround; hard-pressed; stranded
我昨晚没睡好现在很困。
Wǒ zuó wǎn méi shuì hǎo xiàn zài hěn kùn.
I did not sleep well last night and feel sleepy now.
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Appears across levels (4（5）) in the HSK 3.0 word list.