f
Proposed by a contributor, not yet supported by evidence.
Also seen as: fs · f's
Sense 1
The sixth numeral symbol of the English alphabet, called ef and written in the Latin script.
Ký hiệu số thứ sáu trong bảng chữ cái tiếng Anh
Machine-translated — suggest a fix
Numeral
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 2
Folio, paper and book size (10"-12.5" x 15"-20")
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 3
The sixth numeral symbol of the English alphabet, called ef and written in the Latin script.
Ký hiệu số thứ sáu trong bảng chữ cái tiếng Anh
Machine-translated — suggest a fix
Numeral
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 4
An expression of sympathy or pity; see F in the chat.
InterjectionRegister: humorous
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “f” mean?
The sixth numeral symbol of the English alphabet, called ef and written in the Latin script.
Is “f” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.