• machination
    DEFINITION: (noun) A crafty scheme or cunning design for the accomplishment of a sinister end. SYNONYMS: intrigue. USAGE: During his early youth he had to contend against the machinations of a malignant uncle, who would have robbed him of his large possessions. Discuss […]
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never lower your guard

to drop/lower one’s guard – to stop being careful to avoid danger or difficulty. As soon as we started talking about angling, he dropped his guard and soon we were chatting like buddies.