Chinese

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mischievous; obstinate; to play
mischievous; obstinate; to play; stupid; stubborn; naughty
 
sickness; disease; hate
sickness; disease; hate; envy
 
trad. (頑疾)
simp. (顽疾)

Pronunciation

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Noun

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頑疾

  1. (literal or figurative) stubborn illness; old affliction