octagon
/ˈɒktəɡ(ə)n/
"octagon" is a 7-letter English headword indexed on PlainSpell.
The verdict
“octagon” has 10 generated spelling variants in the English index at frequency #32,520. The variants make it a useful spelling check.
- #32,520
- frequency rank, English
- 1,431
- “O” headwords
- 10
- tracked misspellings
- 2
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A polygon with eight sides and eight angles.
Corpus desk
Index EN-octagon · octagon · English
octagon · rank #32,520 · 10 variants · 2 confusables
- FREQ-MID #32,520
- LEN-LONG 7 letters
- VOW-3 3 vowels
- CONFUS-LOW 2 pairs
- VAR-MID 10 variants
- BOOK-MID 1,431
- PHOTO-FINISH oaths
Nearest frequency peer: oaths (-2 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 “octagon”
Same rarity band: useful when a typo lands on a peer headword
- noxious
noxious
67,485 corpus weight
- nucleic
nucleic
67,484 corpus weight
- oaths
oaths
67,483 corpus weight
- octagon
octagon
67,481 corpus weight
- opulent
opulent
67,478 corpus weight
- ordinate
ordinate
67,477 corpus weight
What this shows “octagon” 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 | octagon |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈɒktəɡ(ə)n/ |
| Letters | 7 |
| Frequency rank | #32,520 |
| Misspellings tracked | 10 |
| Confusable pairs | 2 |
| Source | Wiktionary (kaikki.org) |
Frequency seat of misspelling magnet “octagon”
A misspelling magnet
The generator records 10 spelling variants around octagon (IPA /ˈɒktəɡ(ə)n/), anoun. Corpus frequency is #32,520 among 1,431 “O” headwords. Wiktionary lists 2 senses, so context still picks the gloss.
Our generated misspelling index lists 10 likely wrong-spelling variants for octagon, with forms such as "cotagon", "ocatgon", and "occtagon". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 2 confusable-pair relationships, "Otago", "octagonal", since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Etymologically, the entry records: From Latin octagōnon, octōgōnon (“octagon”), and from its etymon Ancient Greek ὀκτάγωνον (oktágōnon, “octagon”), probably from Koine Greek ὀκτάγωνος (oktágōnos, “having eight corners”) + -ον (-on, suffix forming nouns). ὀκτάγωνος is derived from ὀκτᾰ- (oktă… The correct English form is octagon, spelled O-C-T-A-G-O-N.
Definition
- 1A polygon with eight sides and eight angles.
- 2Often in the form Octagon: the arena for mixed martial arts.
Recorded use
Wiktionary examplesThese source excerpts show how octagon appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
From the Circle deſcribe the Octagon, by taking half the Quadrant of the former for each Side of the latter. [...] [B]y conjoining theſe Points with ſtrait Lines agreeable to the Shape of the Octagon, the whole Work is completed.
In like manner it is demonſtrated that one angle of a regular hexagon will be equal to one right angle, and one third part of one right angle; one angle of a regular octagon equal to one right angle and half a right angle; [...]
Etymology
From Latin octagōnon, octōgōnon (“octagon”), and from its etymon Ancient Greek ὀκτάγωνον (oktágōnon, “octagon”), probably from Koine Greek ὀκτάγωνος (oktágōnos, “having eight corners”) + -ον (-on, suffix forming nouns). ὀκτάγωνος is derived from ὀκτᾰ- (oktă-, prefix meaning ‘eight’) (from ὀκτώ (oktṓ, “eight”), ultimately from Proto-Indo-European *oḱtṓw (“eight”)) + γωνία (gōnía, “angle; corner”) (probably ultimately from Proto-Indo-European *ǵónu (“knee”)); analysable as octa- + -gon. The English word is cognate with Middle French octogone (modern French octogone), Italian octagono (obsolete), ottagono, Spanish octágono, octógono. Sense 2 (“arena for mixed martial arts”) refers to its shape.
Synonyms
This word in other languages
Common misspellings
Also misspelled as:
- cotagon
- ocatgon
- occtagon
- octaggon
- octagno
- octagonn
- octaogn
- octgaon
- octtagon
- otcagon
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of octagon - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.
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 "octagon", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 7 letters (nearest by frequency rank).
Similar misspelling depth
Headwords with a similar count of attested misspellings (10 here; floor ≥5).