Fabricate
To invent fancifully or falsely
Example: “I realized my whole life was fabricated with lies.”
Facet
An aspect or feature
Example: “Carefully examine every facet of the argument.”
Facetious
Treating serious issues with humor
Example: “John’s facetiousness enraged his friend who had just lost his childhood pet.”
Faction
A smaller group within a larger one
Example: “In the Transformers fictional universe, Cybertronians divided into opposing factions known as the Autobots and the Decepticons.”
Fallacious
Based on a mistaken belief
Example: “John’s fallacious arguments cost him a victory in debate club.”
Famish
Extremely hungry
Example: “Russian citizens were left famished under Stalin’s rule.”
Fatuous
Inane and idiotic
Example: “John stood atop a lunch table yelling fatuous statements, losing his dignity in the process.”
Fealty
Loyalty especially to royalty
Example: “The knight pledged fealty to the king.”
Feint
Deceptive movement
“The swordsman’s feint fooled his opponent before he went for the kill.”