FIFO
/ˈfaɪ.foʊ/noun, phrase
FIFO is spelled F-I-F-O: 4 letters and 2 syllables. It appears about once in every 3 million words in written English, the 53,573rd most frequent word form (wordfreq, 2021 data). As a noun, FIFO means “Acronym of first in first out” (English Wiktionary, September 2026). The plural of FIFO is FIFOs.
How many letters and syllables are in FIFO?
| Letters | 4: F-I-F-O |
|---|---|
| Syllables | 2 (from its pronunciation) |
| In writing | about once in every 3 million words; the 53,573rd most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is FIFO?
FIFO appears about once in every 3 million words in written English, the 53,573rd most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce FIFO?
- UK /ˈfaɪfəʊ/
- US /ˈfaɪ.foʊ/
FIFO has 2 syllables (counted from the pronunciation).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of FIFO
- FIFOs plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does FIFO mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Acronym of first in first out.
- 2
Acronym of fly-in fly-out.
phrase
- 1
informalAcronym of fit in or fuck off, a warning to obey societal or institutional norms, or be expelled.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).