octagonal
/ɑkˈtæɡənəl/
"octagonal" is a 9-letter English headword indexed on PlainSpell.
The verdict
“octagonal” has 13 generated spelling variants in the English index at frequency #44,380. The variants make it a useful spelling check.
- #44,380
- frequency rank, English
- 1,431
- “O” headwords
- 13
- tracked misspellings
- 1
- confusable pair
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Shaped like an octagon, in having eight sides and eight angles.
Corpus desk
Index EN-octagonal · octagonal · English
octagonal · rank #44,380 · 13 variants · 1 confusable
- FREQ-MID #44,380
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-LOW 1 pairs
- VAR-HIGH 13 variants
- BOOK-MID 1,431
- PHOTO-FINISH Ofcom
Nearest frequency peer: Ofcom (+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.
Rank peers near misspelling magnet “octagonal”
Same rarity band: useful when a typo lands on a peer headword
- OAS
OAS
55,624 corpus weight
- Oberon
Oberon
55,623 corpus weight
- octagonal
octagonal
55,621 corpus weight
- Ofcom
Ofcom
55,620 corpus weight
- oldie
oldie
55,619 corpus weight
- operable
operable
55,618 corpus weight
What this shows “octagonal” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.
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 | octagonal |
| Language | English |
| Part of speech | Adjective |
| IPA | /ɑkˈtæɡənəl/ |
| Letters | 9 |
| Frequency rank | #44,380 |
| Misspellings tracked | 13 |
| Confusable pairs | 1 |
| Source | Wiktionary (kaikki.org) |
Frequency seat of misspelling magnet “octagonal”
A misspelling magnet
The generator records 13 spelling variants around octagonal (IPA /ɑkˈtæɡənəl/), anadjective. Corpus frequency is #44,380 among 1,431 “O” headwords. Dominant gloss: "Shaped like an octagon, in having eight sides and eight angles.".
Our generated misspelling index lists 13 likely wrong-spelling variants for octagonal, with forms such as "cotagonal", "ocatgonal", and "occtagonal". 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 1 confusable-pair relationship, "octagon", where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From octagon + -al. The correct English form is octagonal, spelled O-C-T-A-G-O-N-A-L.
Definition
- 1Shaped like an octagon, in having eight sides and eight angles.
Recorded use
Wiktionary examplesThese source excerpts show how octagonal appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Near Smeinogorsk an octagonal tumulus has been found containing the corpse of a horse near a rectangular one with a human corpse, both within stone circles.
The sundials range in shape from octagonal to the usual round. Prices range from $75 to $375.
Etymology
From octagon + -al.
This word in other languages
Common misspellings
Also misspelled as:
- cotagonal
- ocatgonal
- occtagonal
- octaggonal
- octagnoal
- octagoanl
- octagonall
- octagonla
- octagonnal
- octaognal
- octgaonal
- octtagonal
- otcagonal
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of octagonal - 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.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "octagonal", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).
Similar misspelling depth
Headwords with a similar count of attested misspellings (13 here; floor ≥5).