| gainsay | To deny or contradict a fact or statement | |
| gaffe | An unintentional act or remark causing embarrassment to its originator; a blunder | |
| futile | attempting to avoid notice or attention, typically because of guilt or a belief that discovery would lead to trouble; secretive | |
| furor | An outbreak of public anger or excitement | |
| funereal | Having the mournful, somber character appropriate to a funeral | |
| fulsome | Complimentary or flattering to an excessive degree. | |
| fudge | A soft, rich confection made with sugar, milk, butter, and flavoring, often chocolate | |
| fruition | The realization or coming into existence of something that was desired or worked for; fulfillment | |
| frugal | Sparing or economical as regards money or food | |
| froward | habitually disposed to disobedience and opposition | |