- first blush
- fifties
- fifthly
- forties
- filiariasis
- fillmore
- film frame
- film changer
- film coated tablet
- film badge
- film making
- film pressure
- film speed
- fluoroboride
- ferricyanide
- fluosilicate
- from father to son
- formaldehyde
- food cycle
- food pyramid
- forty_five
- forty seven
- fluttering sound
- fitly
- formalin
- Fehling's solution
- foundation stone
- foul wind emitted from the anus
- feeler
- frontier (of a village town
- footing
- foxnut
- foot ambrosia
- figures shift
- figures of speech
- first baron marks of broughton
- flat on the back
- finger_tip
- fishing permit
- fly_killer
- foot (of a chair etc.)
- fire gurad
- for a change
- for a moment
- fit to be inferred
- fidility
- free food so distributed
- fist
- festschrift
- fondly