side

/saɪd/

//saɪd// noun

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

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

The verdict

“side” is in the everyday core of English, ranked #297 in English word frequency and used as a noun.

#297
frequency rank, English
4
letters
5
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A bounding straight edge of a two-dimensional shape.

Visual similarity to commonly confused words

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

side vs six
50% similar
side vs sir
50% similar
side vs sit
50% similar

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

Key facts for side
PropertyValue
Headwordside
LanguageEnglish
Part of speechNoun
IPA/saɪd/
Letters4
Frequency rank#297
Misspellings tracked5
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “side” 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). side 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 side is 4 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /saɪd/. Corpus data places it at rank #297 in overall English word frequency, putting it firmly in the everyday core of the language. Wiktionary records 21 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 5 likely wrong-spelling variants for side, with forms such as "isde", "sdie", and "sidde". 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 20 confusable-pair relationships, "six", "sir", "sit", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Middle English side, from Old English sīde (“side, flank”), from Proto-Germanic *sīdǭ (“side, flank, edge, shore”), from Proto-Indo-European *sēy- (“to send, throw, drop, sow, deposit”). Cognate with Saterland Frisian Siede (“side”), West Frisian side … The correct English form is side, spelled S-I-D-E.

Definition

  1. 1
    A bounding straight edge of a two-dimensional shape.
  2. 2
    A flat surface of a three-dimensional object; a face.
  3. 3
    One half (left or right, top or bottom, front or back, etc.) of something or someone.
  4. 4
    A region in a specified position with respect to something.
  5. 5
    The portion of the human torso usually covered by the arms when they are not raised; the areas on the left and right between the belly or chest and the back.
  6. 6
    One surface of a sheet of paper (used instead of "page", which can mean one or both surfaces.)
  7. 7
    One possible aspect of a concept, person, or thing.
  8. 8
    One set of competitors in a game.
  9. 9
    A sports team.
  10. 10
    A group of morris dancers who perform together.
  11. 11
    A group having a particular allegiance in a conflict or competition.
  12. 12
    A recorded piece of music; a record, especially in jazz.
  13. 13
    Sidespin; english
  14. 14
    A television channel, usually as opposed to the one currently being watched (from when there were only two channels).
  15. 15
    A dish that accompanies the main course; a side dish.
  16. 16
    A line of descent traced through a particular relative, usually a parent or spouse, as distinguished from that traced through another.
  17. 17
    The batters faced in an inning by a particular pitcher.
  18. 18
    An unjustified air of self-importance; a conceited attitude.
  19. 19
    A written monologue or part of a scene to be read by an actor at an audition.
  20. 20
    A man who prefers not to engage in anal sex during same-sex sexual activity.
  21. 21
    A root.

Etymology

From Middle English side, from Old English sīde (“side, flank”), from Proto-Germanic *sīdǭ (“side, flank, edge, shore”), from Proto-Indo-European *sēy- (“to send, throw, drop, sow, deposit”). Cognate with Saterland Frisian Siede (“side”), West Frisian side (“side”), Dutch zijde, zij (“side”), German Low German Sied (“side”), German Seite (“side”), Danish and Norwegian side (“side”), Swedish sida (“side”). The LGBTQ slang sense was coined by sex therapist and author Joe Kort in 2010 and popularized in 2013. The sense was coined by analogy with top and bottom and based on the metaphor of a box which has a top, bottom, and sides.

Synonyms

edgefacehalfpageteamchannelstation

This word in other languages

lado(Español)côté(Français)Seite(Deutsch)lado(Português)

Common misspellings

Also misspelled as: isde,sdie,sidde,sied,sside

Misspelling Pattern Breakdown

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

isde2sdie2sidde1sied2sside1
Edit distance from "side"

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 "side"?
"side" is spelled S-I-D-E. The IPA pronunciation is /saɪd/.
What does "side" mean?
As a noun, "side" means: A bounding straight edge of a two-dimensional shape.
What words are commonly confused with "side"?
"side" is commonly confused with "six", "sir", "sit". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "side"?
The IPA (International Phonetic Alphabet) transcription for "side" is /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 "side"?
From Middle English side, from Old English sīde (“side, flank”), from Proto-Germanic *sīdǭ (“side, flank, edge, shore”), from Proto-Indo-European *sēy- (“to send, throw, drop, sow, deposit”). Cognate with Saterland Frisian Siede (“side”), West Fri... 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 “side”

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

  • The one correct English spelling is S-I-D-E - every other letter order is a misspelling in standard orthography.
  • Say it as /saɪd/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “six” - see the side-by-side comparison. side vs six
  • 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