conundrum /kə-nunˈdrəm/

1. A riddle, esp one whose answer is a play on words
2. Any puzzling question

• semie
• semi-ellipse
• semi-ellipses
• semi-elliptical
• semi-evergreen
• semi-evergreens
• semifinal
• semifinalist
• semifinalists
• semifinals
• semi-finished
• semifluid
• semifreddi
• semifreddo
• semifreddos
• semiglobular
• semi-grand
• semi-grands
• semi-imbecile
• semi-imbeciles
• semi-independent
• semi-jubilee
• semi-jubilees
• semi-latus rectum
• semi-liquid