outside

/ˈaʊt.saɪd/

//ˈaʊt.saɪd// noun

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

"outside" is a 7-letter English headword indexed on PlainSpell.

The verdict

“outside” is in the everyday core of English, ranked #563 in English word frequency and used as a noun.

#563
frequency rank, English
7
letters
9
tracked misspellings
7
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The part of something that faces out; the outer surface.

Visual similarity to commonly confused words

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

outside vs outsider
88% similar
outside vs outsiders
78% similar
outside vs onside
71% similar

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

Key facts for outside
PropertyValue
Headwordoutside
LanguageEnglish
Part of speechNoun
IPA/ˈaʊt.saɪd/
Letters7
Frequency rank#563
Misspellings tracked9
Confusable pairs7
SourceWiktionary (kaikki.org)

Where “outside” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). outside lands here:

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for outside is 7 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈaʊt.saɪd/. Corpus data places it at rank #563 in overall English word frequency, putting it firmly in the everyday core of the language. Wiktionary records 8 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 9 likely wrong-spelling variants for outside, with forms such as "otuside", "oustide", and "outisde". 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 7 confusable-pair relationships, "outsider", "outsiders", "onside", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From out + side. The correct English form is outside, spelled O-U-T-S-I-D-E.

Definition

  1. 1
    The part of something that faces out; the outer surface.
  2. 2
    The external appearance of someone or something.
  3. 3
    The space beyond some limit or boundary.
  4. 4
    The furthest limit, as to number, quantity, extent, etc.
  5. 5
    The part of a road towards the central division: towards the right if one drives on the left, or towards the left if one drives on the right.
  6. 6
    The side of a curved road, racetrack etc. that has the longer arc length; the side of a racetrack furthest from the interior of the course or some other point of reference.
  7. 7
    The outer part of the sea, away from the peak of a wave.
  8. 8
    A passenger riding on the outside of a coach or carriage.

Etymology

From out + side.

This word in other languages

exterior(Español)extérieur(Français)Außenseite(Deutsch)exterior(Português)

Common misspellings

Also misspelled as: otuside,oustide,outisde,outsdie,outsidde,outsied,outsside,outtside,uotside

Misspelling Pattern Breakdown

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

otuside2oustide2outisde2outsdie2outsidde1outsied2outsside1outtside1
Edit distance from "outside"

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 "outside"?
"outside" is spelled O-U-T-S-I-D-E. The IPA pronunciation is /ˈaʊt.saɪd/.
What does "outside" mean?
As a noun, "outside" means: The part of something that faces out; the outer surface.
What words are commonly confused with "outside"?
"outside" is commonly confused with "outsider", "outsiders", "onside". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "outside"?
The IPA (International Phonetic Alphabet) transcription for "outside" is /ˈaʊt.saɪd/. 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 "outside"?
From out + side. 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.

Using “outside”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is O-U-T-S-I-D-E - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈaʊt.saɪd/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “outsider” - see the side-by-side comparison. outside vs outsider
  • Browse more English words and confusable pairs in the same reference. English words
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.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list