ACLU
"aclu" is a 4-letter English headword indexed on PlainSpell.
The verdict
“ACLU” has 5 generated spelling variants in the English index at frequency #21,127. The variants make it a useful spelling check.
- #21,127
- frequency rank, English
- 3,931
- “A” headwords
- 5
- tracked misspellings
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of American Civil Liberties Union.
Corpus desk
Index EN-aclu · ACLU · English
ACLU · rank #21,127 · 5 variants · 20 confusables
- FREQ-MID #21,127
- LEN-MID 4 letters
- VOW-2 2 vowels
- CONFUS-HIGH 20 pairs
- VAR-MID 5 variants
- BOOK-MID 3,931
- PHOTO-FINISH affirmation
Nearest frequency peer: affirmation (+1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Frequency neighbourhood for “ACLU”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- Yoon
Yoon
78,880 corpus weight
- ACLU
ACLU
78,874 corpus weight
- affirmation
affirmation
78,873 corpus weight
- Amherst
Amherst
78,871 corpus weight
- Annette
Annette
78,870 corpus weight
- AOL
AOL
78,869 corpus weight
What this shows Bars show where “ACLU” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
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 | ACLU |
| Language | English |
| Part of speech | Proper noun |
| Letters | 4 |
| Frequency rank | #21,127 |
| Misspellings tracked | 5 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “ACLU” sits in English frequency
A misspelling magnet
The generator records 5 spelling variants around ACLU, aproper noun. Corpus frequency is #21,127 among 3,931 “A” headwords. Dominant gloss: "Initialism of American Civil Liberties Union.".
Our generated misspelling index lists 5 likely wrong-spelling variants for ACLU, with forms such as "acclu", "acllu", and "acul". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 20 confusable-pair relationships, "AL", "AU", "all", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
No borrowing history is documented for this entry, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct English form is ACLU, spelled A-C-L-U.
Definition
- 1Initialism of American Civil Liberties Union.
Recorded use
Wiktionary examplesThese source excerpts show how ACLU appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Becoming up in arms against the ACLU and others who are PCing Christmas really will amount to nothing in the end.
Now liberal cultural power has increased, the ACLU doesn’t seem very interested in the liberties of non-progressives anymore, and Dr. Seuss sells as pricey samizdat.
Common misspellings
Also misspelled as:
- acclu
- acllu
- acul
- alcu
- calu
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of ACLU - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.
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.
PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 3, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
How do you spell "ACLU"?
What does "ACLU" mean?
What words are commonly confused with "ACLU"?
What language does "ACLU" come from?
Is PlainSpell free to use?
Similar English words by spelling shape
Same letter count and similar misspelling depth for "ACLU", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 4 letters (nearest by frequency rank).
Similar misspelling depth
Headwords with a similar count of attested misspellings (5 here; floor ≥5).
What to do next
You've looked up "ACLU". Here's where to go from here.
- "ACLU" maps to 20 confusable pairs in this vintage; the highest-scored is "AL". View pair
- 5 edit-distance misspelling variants are generated for spell-check research on this headword. See variants
- Usage frequency rank #21,127 among English headwords in this corpus. Corpus statistics
- Browse more English words in the "A" letter cohort. A–Z browse
- PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.
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.