skulduggery or (N American) skullduggery /skulˈ or skul-dugˈə-ri/

1. Underhand malpractices
2. Trickery

• tricksinesses
• tricksome
• trickster
• trickstering
• tricksterings
• tricksters
• tricksy
• trick-track
• trick-tracks
• tricky
• triclinia
• triclinic
• triclinium
• triclosan
• tricolor
• tricolors
• tricolour
• tricoloured
• tricolours
• triconsonantal
• triconsonantic
• tricorn
• tricorne
• tricornes
• tricorns