sider

S1I1D2E1R1

noun

One who takes a side.

OriginEnglish side ← Middle English side ← Old English sīde →
Less commonScrabble 6
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Meanings

sider1

nounsider (plural siders)

plural siders

  1. One who takes a side.

    enemies of God and our Religion, and siders with Antichrist

    1644, Robert Ram, The Souldiers Catechisme

sider2

nounsider (plural siders)

plural siders

  1. in compoundsrareA shape with a specified number of sides.

    So if Colorado is not a rectangle, what is it? Well, not a pentagon, (Greek for 5-sider), hexagon (6-sider), or a heptagon (7-sider), but a—hold on to something—hexahectaenneacontakaiheptagon (697-sider).

    2023 January 23 [2018 October 31], Frank Jacobs, “Colorado Is Not a Rectangle—It Has 697 Sides”, in Big Think, archived from the original on 20 Apr 2023

sider3

nounsider (countable and uncountable, plural siders)

plural siders

  1. countableobsoleteuncountableObsolete form of cider.

Origin

sider · noun

  1. Proto-Indo-European*seh₁-
  2. Proto-Germanic*sīdaz
  3. Proto-Germanic*sīdǭ
  4. Old Englishsīde
  5. Middle Englishside
  6. Englishside
  7. Englishsider

From side + -er (agent noun suffix).

Full word history & related roots →

sider · noun

  1. Proto-Indo-European*seh₁-
  2. Proto-Germanic*sīdaz
  3. Proto-Germanic*sīdǭ
  4. Old Englishsīde
  5. Middle Englishside
  6. Englishside
  7. Englishsider

From side + -er (measurement suffix).

Full word history & related roots →

Rhymes & wordplay

Anagrams

residDesir
Cite this entry
APA

sider. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/sider

MLA

“sider.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sider. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “sider,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/sider.

Source: sider on Wiktionary, CC BY-SA 4.0.