sider

noun

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

"sider" is a 5-letter English headword indexed on PlainSpell.

The verdict

“sider” is uncommon English (frequency #62,509 among 6,566 “S” headwords), classed as a noun. The kind of spelling people second-guess.

#62,509
frequency rank, English
6,566
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - One who takes a side.

Corpus desk

Index EN-sider · sider · English

sider · rank #62,509 · 0 variants · 0 confusables

  • FREQ-RARE #62,509
  • LEN-MID 5 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 6,566
  • PHOTO-FINISH sica

Nearest frequency peer: sica (-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.

Long-tail ranks near “sider”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “sider” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for sider
PropertyValue
Headwordsider
LanguageEnglish
Part of speechNoun
Letters5
Frequency rank#62,509
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “sider” in English

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).siderfalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “sica” (#62,508), “signe” (#62,510), “Sherborne” (#62,507). Among 6,566 “S” headwords, “sider” is #62,509. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

sider is uncommon English at frequency #62,509 among 6,566 “S” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "One who takes a side.".

Our edit-distance generator produced no likely misspellings for sider, since its letter pattern doesn't lend itself to common typo substitutions. No confusable counterpart is on file for this word, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From side + -er. The correct English form is sider, spelled S-I-D-E-R.

Definition

  1. 1
    One who takes a side.

Recorded use

Wiktionary example

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

  1. enemies of God and our Religion, and siders with Antichrist

Etymology

From side + -er.

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 "sider"?
"sider" is spelled S-I-D-E-R.
What does "sider" mean?
As a noun, "sider" means: One who takes a side.
What is the origin of the word "sider"?
From side + -er. 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 "sider", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 5 letters (nearest by frequency rank).

signe#62,510soler#62,522spurn#62,530Sunda#62,544

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

Source: FrequencyWords open word-frequency list