Merriam-Webster's Collegiate Dictionary:
fast-talker
fast-track
fast-tracker
fast-twitch
fastback
fastball
fastballer
fasten
fastener
fastening
fastidious
fastidiously
fastidiousness
fastigiate
fastness
fastuous
fat
fat body
fat cat
fat cell
fat depot
fat farm
fat tuesday
fat-cat
fat-tailed sheep
fat-witted
fata morgana
fata viam invenient
fatal
fatalism
fatalist
fatalistic
fatalistically
fatality
fatally
fatback
fate
fated
fateful
fatefully
fatefulness
fath
fathead
fatheaded
fatheadedly
fatheadedness
father
father christmas
father figure
father image
father time
father's day
father-in-law
fatherhood
fatherland
fatherless
fatherlike
fatherliness
fatherly
fathom
fathom five national marine park
fathomable
fathometer
fathomless
fathomlessly
fathomlessness
fatidic
fatidical
fatigability
fatigable
fatigue
fatiguingly
fatless
fatling
fatly
fatness
fatshan
fatshedera
fatso
fatstock
fatten
fattener
fatti maschii, parole femine
fattiness
fattish
fatty
fatty acid
fatty liver
fatuity
fatuous
fatuously
fatuousness
fatwa
fatwood
faubourg
fauces
faucet
