sub rosa /sub rōˈzə or sŭb roˈzä/

1. Literally, under the rose (a traditional symbol of secrecy)
2. Hence, privately, confidentially

• fasters
• fastest
• Fastext
• fast food
• fast foods
• fast forward
• fast-forward
• fast-forwarded
• fast-forwarding
• fast-forwards
• fast-handed
• fasti
• fastidious
• fastidiously
• fastidiousness
• fastidiousnesses
• fastigiate
• fastigiated
• fastigium
• fastigiums
• fasting
• fastings
• fastish
• fast lane
• fast lanes