| 单词 | insidious |
| 释义 | insidious —insidiously, adv. —insidiousness, n. /in sid"ee euhs/, adj. 1. intended to entrap or beguile: an insidious plan. 2. stealthily treacherous or deceitful: an insidious enemy. 3. operating or proceeding in an inconspicuous or seemingly harmless way but actually with grave effect: an insidious disease. [1535-45; < L insidiosus deceitful, equiv. to insidi(ae) (pl.) an ambush (deriv. of insidere to SIT in or on) + -osus -OUS] Syn. 1. corrupting. 2. artful, cunning, wily, subtle, crafty. |
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