JSON

/ˈd͡ʒeɪsən/

//ˈd͡ʒeɪsən// name

By · According to Wiktionary data (CC BY-SA) ·

"json" is a 4-letter English headword indexed on PlainSpell.

The verdict

“JSON” has 6 generated spelling variants in the English index at frequency #39,378. The variants make it a useful spelling check.

#39,378
frequency rank, English
796
“J” headwords
6
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of JavaScript Object Notation, a data format used to represent structured data. It is based on JavaScript syntax.

Corpus desk

Index EN-json · JSON · English

JSON · rank #39,378 · 6 variants · 20 confusables

  • FREQ-MID #39,378
  • LEN-MID 4 letters
  • VOW-1 1 vowel
  • CONFUS-HIGH 20 pairs
  • VAR-MID 6 variants
  • BOOK-MID 796
  • PHOTO-FINISH junkyard

Nearest frequency peer: junkyard (+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 “JSON”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “JSON” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

JSON vs jun
0% similar
JSON vs Juan
25% similar
JSON vs Judson
17% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for JSON
PropertyValue
HeadwordJSON
LanguageEnglish
Part of speechProper noun
IPA/ˈd͡ʒeɪsən/
Letters4
Frequency rank#39,378
Misspellings tracked6
Confusable pairs20
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “JSON”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).JSONlands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “junkyard” (#39,379), “Jenni” (#39,376), “Jemima” (#39,375). Among 796 “J” headwords, “JSON” is #39,378. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 6 spelling variants around JSON (IPA /ˈd͡ʒeɪsən/), aproper noun. Corpus frequency is #39,378 among 796 “J” headwords. Dominant gloss: "Initialism of JavaScript Object Notation, a data format used to represent structured data. It is based on JavaScript syntax.".

Our generated misspelling index lists 6 likely wrong-spelling variants for JSON, with forms such as "jjson", "josn", and "jsno". 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 20 confusable-pair relationships, "jun", "Juan", "Judson", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Wiktionary doesn't record an etymology for this headword, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is JSON, spelled J-S-O-N.

Definition

  1. 1
    Initialism of JavaScript Object Notation, a data format used to represent structured data. It is based on JavaScript syntax.

Common misspellings

Also misspelled as:

  • jjson
  • josn
  • jsno
  • jsonn
  • jsson
  • sjon

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of JSON - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

jjson1josn2jsno2jsonn1jsson1sjon2
Edit distance from "JSON"

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

How do you spell "JSON"?
"JSON" is spelled J-S-O-N. The IPA pronunciation is /ˈd͡ʒeɪsən/.
What does "JSON" mean?
As a proper noun, "JSON" means: Initialism of JavaScript Object Notation, a data format used to represent structured data. It is based on JavaScript syntax.
What words are commonly confused with "JSON"?
"JSON" is commonly confused with "jun", "Juan", "Judson". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "JSON"?
The IPA (International Phonetic Alphabet) transcription for "JSON" is /ˈd͡ʒeɪsən/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "JSON" come from?
"JSON" is a English word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "JSON", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 4 letters (nearest by frequency rank).

Ivor#39,372loin#39,400Hibs#39,351heft#39,349

Similar misspelling depth

Headwords with a similar count of attested misspellings (6 here; floor ≥5).

Lilian6 variantsLoire6 variantsguile6 variantsmatted6 variants

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list