flummox /flumˈəks/ (informal)

To perplex or puzzle

• lappings
• Lappish
• lap-roller
• laps
• lapsable
• lapsang
• lapsangs
• lapsang souchong
• lapse
• lapsed
• lapse rate
• lapse rates
• lapses
• lapsing
• laps of honour
• lapstone
• lapstones
• lapstrake
• lapstreak
• lapstreaks
• lapsus
• lapsus calami
• lapsus linguae
• lapsus memoriae
• laptop