| fanatic | A person filled with excessive and single-minded zeal, especially for an extreme religious or political cause | |
| facetious | Treating serious issues with deliberately inappropriate humor; flippant | |
| fabricate | To make or create something by assembling parts or components | |
| exult | To show or feel a lively or triumphant joy; rejoice exceedingly; be highly elated or jubilant | |
| extraneous | Irrelevant or unrelated to the subject being dealt with | |
| extirpate | To root out and destroy completely | |
| extant | Still in existence; not destroyed, lost, or extinct | |
| expunge | To erase or strike out | |
| exponent | A person who believes in and promotes the truth or benefits of an idea or theory | |
| explicate | To make clear or explicit; explain comprehensively | |