fmu

phrase

fmu is a phrase meaning “Initialism of fucking me up or fucks me up (“making me laugh; makes me laugh”)” (English Wiktionary, September 2026). It is spelled F-M-U, and it appears about once in every 20 million words in written English (wordfreq, 2021 data).

What does fmu mean?

phrase

1
Initialism of fucking me up or fucks me up (“making me laugh; makes me laugh”).
this clip fmu

noun

as FMU

1
Initialism of freight multiple unit.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How common is fmu?

Fmu appears about once in every 20 million words in written English, the 136,649th most frequent word form in the list.

fmu0.0010.010.11101001,00010,000

rarerper million words of written Englishmore common

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).