This section is from the book "Hill's Manual Of Social And Business Forms: A Guide To Correct Writing", by Thos. E. Hill. Also available from Amazon: Hill's Manual Of Social And Business Forms: The How-To-Do-Everything Book Of Victorian America.
Fear - alarm, dread, timidity, terror, fright, trepidation, apprehension.
Fearful - dreadful, horrible, terrible, awful, afraid, timorous, timid.
Fearless - daring, brave, intrepid, undaunted, courageous.
Feasible - reasonable, plausible, practicable. Feat - exploit, trick, achievement, act, deed. Feeble - frail, infirm, weak. Feeling - sensation, sympathy, generosity, sensibility.
Felicity - joy, delight, happiness, prosperity, bliss, blessedness.
Fertile - fruitful, prolific, abundant, productive.
Fervor - warmth, heat, ardor, vehemence, zeal.
Festivity - joyfulness, happiness, gayety, festival.
Fickle - unstable, changeable, inconstant, variable, capricious, impulsive.
Fiction - invention, lie, untruth, falsehood, fabrication.
Fidelity - faith, honesty, loyalty.
Fiery - hot, fervent, impulsive, ardent, passionate, vehement.
Fine - delicate, nice, pretty, lovely, showy, beautiful, elegant.
Finish - conclude, end, terminate, close, complete, perfect.
Firm - ready, strong, immovable, solid, steady, sturdy, partnership, resolute.
First - highest, chief, earliest, primary, primitive, pristine, commencement, original.
Fitted - suited, competent, qualified, adapted.
Flag - droop, languish, decline, pine, faint.
Flagitious - wicked, atrocious, flagrant, heinous.
Flavor - taste, odor, fragrance.
Flaw - spot, stain, speck, crack, blemish, defect. Fleeting - transient, transitory, swift, temporary.
Fleetness - swiftness, rapidity, quickness, velocity, celerity.
Fluctuate - vary, waver, change, hesitate, vacillate.
Follower - adherent, successor, believer, disciple, partisan, pursuer.
Fondness - affection, love, attachment, tenderness.
Foolish - simple, stupid, silly, absurd, preposterous, irrational.
Forbear - refrain, spare, abstain, pause.
Forbid - deny, prohibit, interdict, oppose.
Force - oblige, compel, restrain.
Forcible - powerful, strong, irresistible, mighty, potent, cogent.
Forebode - foretell, presage, betoken, prognosticate, augur.
Forego - quit, give up, resign.
Foregoing - before, former, previous, prior, preceding, anterior, antecedent.
Forethought - expectation, foresight, anticipation, premeditation.
Forfeiture - penalty, fine.
Forge - counterfeit, frame, invent, fabricate.
Forgive - absolve, pardon, remit, acquit, excuse.
Forlorn - forsaken, lost, lonely, destitute, deserted. Form-ceremony, observance, rite. Formal - cermonious. particular, methodical, exact, stiff, precise.
Forsake - desert, abandon, leave, abdicate, relinquish, quit.
Fortunate - successful, lucky, prosperous.
Fortune - estate, portion, success, fate. Forward - confident, eager, bold, ardent, immodest, presumptuous, ready, progressive.
Foster - keep, harbor, nourish, cherish, nurse.
Fragile - brittle, weak, tender, frail.
Frailty - weakness, unsteadiness. instability, failing, foible.
Frame - fabricate, compose, plan, contrive, invent, form, adjust.
Fraternity - society, brotherhood.
Fraud - cheat, imposition, deceit, deception, guile.
Freak - whim, caprice, humor, fancy.
Free - generous, liberal, candid, open, frank, familiar, unconflned, unconstrained, unreserved, munificent, bounteous.
Free - deliver, liberate, rescue, clear, affranchise, enfranchise.
Freedom - liberty, independence, exemption, privilege, familiarity, unrestraint.
Freely - spontaneously, frankly, unreservedly, cheerfully, unhesitatingly, liberally.
Frequently - often, repeatedly, commonly, generally, usually.
Fresh - new, recent, cool, modern, novel. Fret - chafe, anger, gall, corrode, agitate, vex.
Fretful - captious, peevish, angry, petulant.
Friendly - pleasant, kind, agreeable, sociable, amicable.
Fright - panic, consternation, terror, alarm.
Frighten - terrify, scare, alarm, intimidate, affright, daunt.
Frightful - horrid, horrible, terrible, terrific, dreadful, fearful.
Frugal - careful, saving, prudent, economical. Fruitful - abundant, plentiful, fertile, productive, prolific.
Frustrate - defeat, hinder, foil, nullify, disappoint.
Fully - largely, amply, completely, copiously, abundantly.
Futile - useless, frivolous, trifling.
Gain - obtain, get, win, acquire, attain, profit.
Gait - bearing, mien, walk, carriage.
Galc - breeze, storm, hurricane, tempest.
Gather - collect, muster, infer, assemble, compress, fold.
Gay - dashing, showy, merry, fine, cheerful.
Generally - usually, commonly, frequently.
Generous - liberal, bounteous, beneficent, munificent, noble.
Genius - talent, intellect, wisdom, ingenuity, capacity, ability, taste.
Genteel - polished, refined, mannerly, cultured, polite.
Gentle - tame, meek, mild, quiet, peaceable.
Genuine - real, actual, authentic, unalloyed, unadulterated, true, natural.
Germinate - sprout, shoot, grow, bud, vegetate. Gesture - action, motion, posture, attitude. Get - gain, attain, obtain, procure, realize, acquire, possess. Gift - donation, present, gratuity, benefaction, endowment, ability, talent.
Give - impart, confer, grant, bestow, consign, yield.
Glad - happy, gay, cheerful, joyful, joyous, delighted, gratified.
Glance - sight, look, glimpse.
Glitter - glisten, sparkle, shine, glare, radiate. Glittering - glistening, sparkling, shining, bright, brilliant.
Gloom - dark, sad, dim, cloudy, dull, sullen, morose, melancholy.
Glory - fame, renown, splendor, praise, honor, reputation, brightness.
Graceful - comely, genteel, becoming, elegant, neat.
Grand - dignified, lofty, exalted, great, elevated, magnificent, sublime, majestic, glorious, superb, splendid.