To have a long history of wickedness and harbor malicious intentions; to be habitually evil and cunning.
他表面上装作友善，实际上却是稔恶藏奸，试图损害团队的利益。
He pretended to be friendly on the surface, but in reality, he was habitually wicked and harbored malicious intentions, attempting to harm the team's interests.
Era:
Early Modern
Frequency:
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