indoor

/ˈɪndɔː/

//ˈɪndɔː// adj

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

"indoor" is a 6-letter English headword indexed on PlainSpell.

The verdict

“indoor” has 8 generated spelling variants in the English index at frequency #6,150. The variants make it a useful spelling check.

#6,150
frequency rank, English
2,140
“I” headwords
8
tracked misspellings
4
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Situated in, or designed to be used in, or carried on within, the interior of a building.

Corpus desk

Index EN-indoor · indoor · English

indoor · rank #6,150 · 8 variants · 4 confusables

  • FREQ-COMMON #6,150
  • LEN-LONG 6 letters
  • VOW-3 3 vowels
  • CONFUS-MID 4 pairs
  • VAR-MID 8 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH indicating

Nearest frequency peer: indicating (-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 “indoor”

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

corpus weight

What this shows “indoor” 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).

indoor vs Indore
50% similar
indoor vs indoors
86% similar
indoor vs Indo
50% similar

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

Key facts for indoor
PropertyValue
Headwordindoor
LanguageEnglish
Part of speechAdjective
IPA/ˈɪndɔː/
Letters6
Frequency rank#6,150
Misspellings tracked8
Confusable pairs4
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “indoor”

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).indoorlands here:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “indicating” (#6,149), “influential” (#6,151), “importantly” (#6,148). Among 2,140 “I” headwords, “indoor” is #6,150. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 8 spelling variants around indoor (IPA /ˈɪndɔː/), anadjective. Corpus frequency is #6,150 among 2,140 “I” headwords. Dominant gloss: "Situated in, or designed to be used in, or carried on within, the interior of a building.".

Our generated misspelling index lists 8 likely wrong-spelling variants for indoor, with forms such as "idnoor", "inddoor", and "indoorr". 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 4 confusable-pair relationships, "Indore", "indoors", "Indo", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From (with)in + door, first attested 1711. The correct English form is indoor, spelled I-N-D-O-O-R.

Definition

  1. 1
    Situated in, or designed to be used in, or carried on within, the interior of a building.

Recorded use

Wiktionary example

These source excerpts show how indoor appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. These fireworks are not for indoor use!

Etymology

From (with)in + door, first attested 1711.

This word in other languages

de entrecasa(Español)intérieur(Français)Innen-(Deutsch)

Common misspellings

Also misspelled as:

  • idnoor
  • inddoor
  • indoorr
  • indor
  • indoro
  • inndoor
  • inodor
  • nidoor

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of indoor - 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.

idnoor2inddoor1indoorr1indor1indoro2inndoor1inodor2nidoor2
Edit distance from "indoor"

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 "indoor"?
"indoor" is spelled I-N-D-O-O-R. The IPA pronunciation is /ˈɪndɔː/.
What does "indoor" mean?
As an adjective, "indoor" means: Situated in, or designed to be used in, or carried on within, the interior of a building.
What words are commonly confused with "indoor"?
"indoor" is commonly confused with "Indore", "indoors", "Indo". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "indoor"?
The IPA (International Phonetic Alphabet) transcription for "indoor" is /ˈɪndɔː/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "indoor"?
From (with)in + door, first attested 1711. See the full etymology section above for more details.
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 "indoor", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 6 letters (nearest by frequency rank).

intend#6,152heated#6,146lasted#6,158fixing#6,139

Similar misspelling depth

Headwords with a similar count of attested misspellings (8 here; floor ≥5).

flags8 variantsDakota8 variantssmash8 variantsstatue8 variants

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

Source: FrequencyWords open word-frequency list