1. For an indefinite number of successive days
   - day after day

Encyclopedia: Day in day out

• fuddle
• fuddled
• fuddy-duddy
• fudge
• fudge factor
• fudge sauce
• fudge together
• Fuego
• fuel
• fuel cell
• fuel consumption rate
• fuel filter
• fuel gauge
• fuel indicator
• fuel injection
• fuel injection system
• fuel level
• fuel line
• fuel oil
• fuel pod
• fuel system
• fuel-air bomb
• fuel-air explosive
• fueled
• fueling