ibu
/ˈaɪ.bjuː/
"ibu" is a 3-letter English headword indexed on PlainSpell.
The verdict
“ibu” is uncommon English (frequency #57,445 among 17,902 “I” headwords), classed as a noun. The kind of spelling people second-guess.
- #57,445
- frequency rank, English
- 17,902
- “I” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - ibuprofen
| Property | Value |
|---|---|
| Headword | ibu |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈaɪ.bjuː/ |
| Letters | 3 |
| Frequency rank | #57,445 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “ibu” sits in English frequency
Rare enough to double-check
ibu is uncommon English at frequency #57,445 among 17,902 “I” headwords, classed as anoun, transcribed /ˈaɪ.bjuː/. Rarity is why readers land here mid-draft. Gloss: "ibuprofen".
Our edit-distance generator produced no likely misspellings for ibu, since its letter pattern doesn't lend itself to common typo substitutions. Our confusable-pair dataset has no match for it, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: Clipping of ibuprofen. The correct English form is ibu, spelled I-B-U.
Definition
- 1ibuprofen
Etymology
Clipping of ibuprofen.
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 “ibu”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is I-B-U - every other letter order is a misspelling in standard orthography.
- Say it as /ˈaɪ.bjuː/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- 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.