flummox /flumˈəks/ (informal)

To perplex or puzzle

• quadrillions
• quadrillionth
• quadrillionths
• quadrilocular
• quadringenaries
• quadringenary
• quadrinomial
• quadrinomials
• quadripartite
• quadripartition
• quadriplegia
• quadriplegias
• quadriplegic
• quadriplegics
• quadripole
• quadripoles
• quadrireme
• quadriremes
• quadrisect
• quadrisected
• quadrisecting
• quadrisection
• quadrisections
• quadrisects
• quadrisyllabic