shenanigan /shi-nanˈi-gən/ (informal; usu in pl)

1. Trickery, underhand dealings
2. Mischief, antics

• undersealed
• under sealed orders
• undersealing
• undersealings
• underseals
• under-secretaries
• under-secretary
• under-secretaryship
• under-secretaryships
• underself
• undersell
• underseller
• undersellers
• underselling
• undersells
• underselves
• undersense
• undersenses
• under separate cover
• underserved
• underset
• undersets
• undersetting
• undersexed
• undershapen