F

F is the sixth letter in the English alphabet.

Meanings for F

In calendars, F is often an abbreviation for Friday, or for the month February.
In chemistry, F is the symbol for fluorine.
In education, F is a failing grade
In music, F is a note, sometimes referred to as “Fa”.
In temperature, °F is degrees Fahrenheit.
In logic, F stands for False, as opposed to T for True
In slang, F stands for the curse word, but could also stand for respect of the person.

The dictionary definition of f at Wiktionary
Media related to F at Wikimedia Commons