There is a total of 24414 clues beginning with fo
- Fountain-pen fillers
- Fountain-pen part
- Fountain-pen part (Circled Letter Group B)
- Fountain
- Fountain: her
- Fountainhead
- Fountainhead
- Fountains of Wayne "Bright Future in ___"
- Fountains of Wayne "Hey ___"
- Fountains of Wayne song about a girl
- Fountains, in heraldry
- FOUR
- Four "first" followers
- Four "fish"
- Four "hot" followers
- Four "water" enders
- Four (pref)
- Four (prefix)
- Four + four
- Four after "paper"
- Four after do
- Four after R
- Four after the first?
- Four American presidents
- Four and a score or more
- Four and a spare
- Four and five, but not six and seven
- Four and four, say
- Four and twenty blackbirds (and 76 more)
- Four are credited for a grand slam, briefly
- Four at Camden Yards
- Four at the fore?
- Four back ends
- Four bagger
- Four balls
- Four balls to a Torontonian
- Four beats in 4/4 time
- Four before 5-Across
- Four before a slash
- Four before gee
- Four before V
- Four before?
- Four bells
- Four bells, aboard ship
- Four bells, at sea
- Four bells
- Four birdies in a row! (how 17 Across became 35 Across)
- Four bits
- Four black things
- Four blue things
- Four books of the Bible
- Four boys
- Four breaks
- Four by four?
- Four caplets instead of two, eg
- Four CD's
- Four characterizer
- Four characters in "A Midsummer Night's Dream"
- Four clubs
- Four clubs, for example
- Four cold things
- Four colors are enough to color one
- Four commands at 36-Across
- Four commands to a dog
- Four computer keyboard symbols
- Four Corners collectible
- Four Corners corner
- Four Corners native
- Four Corners natives
- Four Corners nickname
- Four Corners people
- Four Corners place
- Four Corners st
- Four Corners state
- Four Corners state with six corners
- Four Corners toucher
- Four Corners tribe
- Four Corners-area Indian
- Four Corners-area Indians
- Four Corners-area tribe
- Four Corners-area tribesman
- Four corny things
- Four couples
- Four couples expect big argument
- Four cross words
- Four cups can be seen on one
- Four decathlon events
- Four door, usually
- Four doses?
- Four duos
- Four ears
- Four earthly places?
- Four enemies?
- Four enter them, but only two survive
- Four escapees from 19-Across
- Four estações
- Four farthings, in old England
- Four fluid drams
- Four fluid ounces
- Four flush