fabulous

facet

factious  factional facetious factitious

factotum

fad  lad  bad  cad  dad  gad  had  mad  pad

sad  tad  wad

fag

fallibility

fallow

falter  totter  flatter

farce

fascia

fastidious fastuous moldy

fatuity  fatuous

fauna flora

fawn

faze

fealty  feat

febrile

feckless

feline

fender    defender

fern

ferret

ferrous

fervent

festal

fester

fetid

fetish

fetter

feud

fiasco

fiat

fidget

fiend

fig 

figurine

filament

filial

filibuster

fillet

filigree

filly

filth

finch

finery

finesse

flatulence

flaunt

flax

fledgling

fleece

fleeting

flick

finicky

firebrand

fissile

flappy

flaggy

flaccid

flagellate

flagrant

flair

lavender

flak

flamboyant

flange

flare

flask

flatulence

flay

fleck  flake

fleece  flee

fleeting

flick

flighty

flimsy

flinch

flit

floe

flotsam

flounder

flout

flunk

fluster

flutter  flatter

foible

folly

fonder

footle

fop  foppish

forager

forbearance forebear

forensic

forestall阻止

forfeit

forgo

forlorn

forsake

forswear

forte   fort

fortuitous

fosse

fosse

fracas

fractious

fragrant

frantic

fraternal

fraught

fray

freak

freckle 

frenetic

fret

friable

frieze

frisk frolic

fritter

frond

fraternize

frowzy

full-bodied

fulcrum

fulminate

fulsomeness

fumble

fumigate

furlough

furrow

fusilladed

fusion

fuss

fustian

fusty

futility