KEY: Essence.
SYN: Being, life, entity, nature, substance.
ANT: Accident, property, additament, garb, clothing, surroundings.

• Frail
• Frame, [See FORM]
• Franchise
• Frangible, [See FRAGILE]
• Frank
• Frantic
• Fraternity, [See BROTHERHOOD]
• Fraternize
• Fraud, [See CHEAT]
• Fraught
• Freakish
• Free
• Freight, [See CARGO]
• Frenzy
• Frequent
• Fresh
• Fretful
• Fret, [See CHAFE]
• Friable, [See FRAGILE]
• Fribble, [See TRIFLE]
• Friction
• Friend
• Friendless, [See FRIEND_and_FORLORN]
• Friendly
• Friendship, [See FRIEND]