| A | B |
| formidable | hard to overcome or deal with; causing fear; awe-inspiring |
| fraternize | to associate with in a brotherly or cordial way; to be friendly with enemy troops |
| frenzied | wildly excited; frantic |
| frivolous | silly; not important |
| functional | useful; practical |
| galvanize | to arouse suddenly, as if by electric shock; to cover with a thin coating of zinc |
| garb | clothing; external appearance; to clothe |
| gaudy | tastelessly cheap and showy; flashy |
| genealogy | an account of the descent of a person or family from ancestors; lineage |
| genial | favorable to growth or human comfort; kindly and friendly |