Part 1.
fallow
undeveloped but potentially useful
fancy
imagine; conceive of; see in one's mind
fanfare
a gaudy outward display
fare
proceed, get along, or succeed
fathom
come to understand
fatuous
devoid of intelligence
Part 2.
fawning
attempting to win favor by flattery
felicitous
exhibiting an agreeably appropriate manner or style
fervent
characterized by intense emotion
fiasco
a complete failure or collapse
filch
make off with belongings of others
financial
involving fiscal matters
Part 3.
firebrand
someone who deliberately foments trouble
fissure
a long narrow depression in a surface
fitful
occurring in spells and often abruptly
flag
a rectangular piece of cloth of distinctive design
flail
thrash about
flair
a natural talent
Part 4.
flay
strip the skin off
flotilla
a fleet of small craft
flourish
grow vigorously
foil
hinder or prevent, as an effort, plan, or desire
foist
force onto another
foolhardy
marked by defiant disregard for danger or consequences