flummox /flumˈəks/ (informal)

To perplex or puzzle

• coacted
• coacting
• coaction
• coactions
• codlin moth
• codlin moths
• codlins
• cod-liver oil
• codologies
• codology
• codomain
• codomains
• codominant
• codon
• codons
• stipendiates
• stipendiating
• stipends
• stipes
• stipitate
• stipites
• stipple
• stippled
• stippler
• stipplers