KEY: Steep \\a.\\.
SYN: Abrupt, precipitous, elevated, inaccessible, hilly, craggy.
ANT: Easy, level, undulating, accessible, gradual.

• Fresh
• Fretful
• Fret, [See CHAFE]
• Friable, [See FRAGILE]
• Fribble, [See TRIFLE]
• Friction
• Friend
• Friendless, [See FRIEND_and_FORLORN]
• Friendly
• Friendship, [See FRIEND]
• Frightful
• Fright, [See ALARM]
• Frigid
• Fringed, [See FIMBRIATED]
• Frippery
• Frisk
• Frisky
• Fritter
• Frivolous
• Frolic
• Frolicsome
• Front, [See FACE]
• Froth, [See BALDERDASH]
• Froward
• Frugal