4B
"4b" is a 1-letter English headword indexed on PlainSpell.
The verdict
“4B” is a moderately-common English word, ranked #33,921 in English word frequency and used as a proper noun.
- #33,921
- frequency rank, English
- 2
- letters
- 5
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A radical feminist movement originating in South Korea whose tenets are: no sex with men, no giving birth, no dating men, and no marriage with men.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | 4B |
| Language | English |
| Part of speech | Proper noun |
| Letters | 2 |
| Frequency rank | #33,921 |
| Misspellings tracked | 0 |
| Confusable pairs | 5 |
| Source | Wiktionary (kaikki.org) |
Where “4B” sits in English frequency
Spelling & Dictionary Insight
The English entry for 4B is 2 letters long, classified as a proper noun. Corpus data places it at rank #33,921 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "A radical feminist movement originating in South Korea whose tenets are: no sex with men, no giving birth, no dating men, and no marriage with men.".
4B doesn't appear in our generated misspelling index, since its letter pattern doesn't lend itself to common typo substitutions. It also participates in 5 confusable-pair relationships, "4D", "4X", "4th", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Etymologically, the entry records: From four Korean words starting with Korean 비(非) (bi, “un-, not”), thus literally translated as "four nos". The correct English form is 4B, spelled 4-B.
Definition
- 1A radical feminist movement originating in South Korea whose tenets are: no sex with men, no giving birth, no dating men, and no marriage with men.
Etymology
From four Korean words starting with Korean 비(非) (bi, “un-, not”), thus literally translated as "four nos".
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 “4B”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is 4-B - every other letter order is a misspelling in standard orthography.
- Don't mix it up with “4D” - see the side-by-side comparison. 4B vs 4D
- Browse more English words and confusable pairs in the same reference. English words
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.