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

1. Underhand malpractices
2. Trickery

• interest groups
• interesting
• interestingly
• interestingness
• interestingnesses
• interest rate
• interest rates
• interests
• interface
• interfaced
• interfaces
• interfacial
• interfacing
• interfacings
• interfaith
• interfascicular
• interfemoral
• interfenestration
• interfere
• interfered
• interference
• interference figure
• interference figures
• interference fit
• interference fringes