noun
eff
EF/ef/
The letter F or the sound it represents.
He reads the isolated letter aloud as eff.

Etymology
Eff uses the name of the letter F to stand for fuck, presumably as a euphemism. The shortened expression also came to be treated as a swear word in its own right.
More examples
- She wrote a capital eff on the board.
- He confused the printed eff with an elongated s.
- The child practiced saying eff clearly.
Forms
eff · effs
Similar words
- F
- Eff spells out the spoken name of the letter F.