DFO
"dfo" is a 3-letter English headword indexed on PlainSpell.
The verdict
“DFO” is uncommon English (frequency #76,710 among 26,416 “D” headwords), classed as a noun. The kind of spelling people second-guess.
- #76,710
- frequency rank, English
- 26,416
- “D” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Initialism of diesel fuel oil.
| Property | Value |
|---|---|
| Headword | DFO |
| Language | English |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #76,710 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “DFO” sits in English frequency
Rare enough to double-check
DFO is uncommon English at frequency #76,710 among 26,416 “D” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Initialism of diesel fuel oil.".
The misspelling generator found no plausible variants for DFO, a straightforward case of a spelling with little room for common typos. This headword has no recorded confusable partner, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Wiktionary doesn't record an etymology for this headword, so its spelling is best explained by sound-to-letter mapping rather than etymology. The correct English form is DFO, spelled D-F-O.
Definition
- 1Initialism of diesel fuel oil.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “DFO”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is D-F-O - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English words near this rank
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.