1.
facetious: joking (often inappropriately); humorous
2.
facile: easily accomplished; ready or fluent; superficial
3.
facsimile: copy
4.
fallow: plowed but not sowed; uncultivated
5.
fastidious: difficult to please; squeamish
6.
fatalism: belief that events are determined by forces beyond one's control
7.
fatuous: foolish; inane
8.
fauna: animals of a period or region
9.
fawning: courting favor by cringing and flattering
10.
fecundity: fertility; fruitfulness
11.
feint: trick; shift; sham blow
12.
fell: cruel; deadly
13.
ferment: agitation; commotion
14.
ferret: drive or hunt out of hiding
15.
fervid: ardent; fervent
16.
fester: rankle; produce irritation or resentment
17.
fetid: malodorous
18.
fickle: changeable; faithless
19.
filch: steal
20.
filial: pertaining to a son or daughter
21.
filibuster: to block legislation by making long speeches
22.
finicky: too particular; fussy
23.
firebrand: hothead; troublemaker
24.
fitful: spasmodic; intermittent
25.
fleck: spot
26.
fleece: rob; plunder
27.
flinch: hesitate; shrink
28.
flippant: lacking proper seriousness
29.
flit: fly; dart lightly; pass swiftly by
30.
floe: mass of floating ice
31.
flora: plants of a region or era
32.
florid: ruddy; reddish; flowery
33.
flounder: struggle and thrash about
34.
flout: reject; mock
35.
flux: flowing; series of changes
36.
foible: weakness; slight fault
37.
foment: stir up; instigate
38.
foolhardy: rash
39.
fop: dandy; man excessively concerned with his clothes
40.
forbearance: patience
41.
ford: place where a river can be crossed on foot
42.
forgo: give up; do without
43.
forlorn: sad and lonely; wretched
44.
forswear: renounce; abandon
45.
forte: strong point or special talent
46.
founder: fail completely; sink
47.
fracas: brawl, melee
48.
fractious: unruly; disobedient; irritable
49.
fraught: filled
50.
frenetic: frenzied; frantic
51.
fresco: painting on plaster (usually fresh)
52.
fret: to be annoyed or vexed
53.
frigid: intensely cold
54.
frond: fern leaf; palm or banana leaf
55.
fulsome: disgustingly excessive
56.
furlough: leave of absence; vacation granted a soldier or civil servant
57.
furor: frenzy; great excitement