flamear - to flutter, to flap
flanquear - to flank
flechar - to sweep off (amor)
flirtear - to flirt
flotar - to float
foetear - to horsewhip
foliar - to foliate, to number (páginas)
fomentar - to promote
fondear - to anchor
forjar - to forge, to create, to shape
formalizar - to formalize
formular - to formulate