flicker

burn unsteadily or fitfully; move waveringly; N: flickering movement or light; brief sensation; Ex. flicker of excitement

flighty

(esp. of a woman’s behavior) capricious; often changing, esp. from one lover to another; impulsive

flinch

hesitate; shrink back (in fear of something unpleasant); Ex. She did not flinch in the face of danger.

flip

send (something) spinning, often into the air, by striking with a light quick blow; turn over; Ex. flip over

flippant

lacking proper seriousness; Ex. flippant remarks about death; N. flippancy

flirt

behave in a way that attracts (sexual) attention; deal triflingly with; N: one (or woman) given to flirting; ADJ. flirtatious

flit

fly; fly or move lightly or quickly; dart lightly; pass swiftly by; Ex. a bee flitting from flower to flower

floe

flat mass of floating ice

flora

plants of a region or era

florescence

condition or period of flowering

florid

ruddy; (of a complexion) reddish; flowery; very ornate; CF. rose

flotsam

drifting wreckage

flounder

struggle and thrash about; proceed clumsily or falter (as in water, mud, snow, etc.); proceed in confusion

flourish

grow well; prosper; make sweeping gestures; wave; brandish; Ex. The trees flourished in the sun. N: showy movement or gesture; embellishment or ornamentation (esp. in handwriting)

flout

reject; mock; show contempt for; scorn; Ex. flout the rules