boffo /bofˈō/ (informal)

1. Highly successful
2. Excellent

• sylphine
• sylphish
• sylphlike
• sylphs
• sylphy
• sylva
• sylvae
• sylvan
• sylvaner
• sylvaners
• sylvanite
• sylvanites
• sylvans
• sylvas
• sylvatic
• sylvestrian
• sylvia
• Sylvian
• Sylvian fissure
• sylvias
• sylvicultural
• sylviculture
• sylvicultures
• Sylviidae
• sylviine