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 West Frisian side (“side”), Dutch zijde, zij (“side”), German Seite (“side”), Danish side (“side”), Swedish sida (“side”).
side (plural sides)
- A bounding straight edge of a two-dimensional shape.
- A square has four sides.
- A flat surface of a three-dimensional object; a face.
- A cube has six sides.
- One half (left or right, top or bottom, front or back, etc.) of something or someone.
- Which side of the tray shall I put it on?
- The patient was bleeding on the right side.
1898, Winston Churchill, chapter 5, The Celebrity:
- We expressed our readiness, and in ten minutes were in the station wagon, rolling rapidly down the long drive, for it was then after nine. […] As we reached the lodge we heard the whistle, and we backed up against one side of the platform as the train pulled up at the other.
- A region in a specified position with respect to something.
- Meet me on the north side of the monument.
- One surface of a sheet of paper (used instead of "page", which can mean one or both surfaces.)
- John wrote 15 sides for his essay!
- One possible aspect of a concept, person or thing.
- Look on the bright side.
- One set of competitors in a game.
- Which side has kick-off?
- (UK, Australia, Ireland) A sports team.
1988, Ken Jones, Soccer skills & tactics, page 9:
- Newly promoted, they were top of the First Division and unbeaten when they took on a Manchester United side that had been revitalized by a new manager, […]
2011 September 28, Jon Smith, “Valencia 1-1 Chelsea”, BBC Sport:
- It was no less than Valencia deserved after dominating possession in the final 20 minutes although Chelsea defended resolutely and restricted the Spanish side to shooting from long range.
- 2011, Nick Cain, Greg Growden, Rugby Union For Dummies, UK Edition, 3rd Edition, page 220,
- Initially, the English, Welsh, Scots and Irish unions refused to send national sides, preferring instead to send touring sides like the Barbarians, the Penguins, the Co-Optimists, the Wolfhounds, Crawshays Welsh, and the Public School Wanderers.
- A group having a particular allegiance in a conflict or competition.
- In the second world war, the Italians were on the side of the Germans.
- We have not always been of the […] same side in politics.
- Alexander Pope
- sets the passions on the side of truth
- (sports, billiards, snooker, pool) Sidespin; english
- He had to put a bit of side on to hit the pink ball.
- (UK, Australia, Ireland, dated) A television channel, usually as opposed to the one currently being watched (from when there were only two channels).
- I just want to see what's on the other side — James said there was a good film on tonight.
- (US, colloquial) A dish that accompanies the main course; a side dish.
- Do you want a side of cole-slaw with that?
- A line of descent traced through one parent as distinguished from that traced through another.
- To sit upon thy father David's throne, / By mother's side thy father.
- (bounding straight edge of an object): edge
- (flat surface of an object): face
- (left or right half): half
- (surface of a sheet of paper): page
- (region in a specified position with respect to something):
- (one possible aspect of a concept):
- (set of opponents in a game): team
- (group having a particular allegiance in a war):
- (television channel): channel, station (US)
- (intransitive) To ally oneself, be in an alliance, usually with "with" or rarely "in with"
- Which will you side with, good or evil?
- 1597, Francis Bacon, Essays – "Of Great Place":
- All rising to great place is by a winding star; and if there be factions, it is good to side a man's self, whilst he is in the rising, and to balance himself when he is placed.
- Alexander Pope
- All side in parties, and begin the attack.
- 1958, Archer Fullingim, The Kountze [Texas] News, August 28, 1958:
- How does it feel... to... side in with those who voted against you in 1947?
- To lean on one side.
- (Can we find and add a quotation of Francis Bacon to this entry?)
- (transitive, obsolete) To be or stand at the side of; to be on the side toward.
- His blind eye that sided Paridell.
- (transitive, obsolete) To suit; to pair; to match.
- (Can we find and add a quotation of Clarendon to this entry?)
- (transitive, shipbuilding) To work (a timber or rib) to a certain thickness by trimming the sides.
- (transitive) To furnish with a siding.
- to side a house
- (ally oneself):
- take side
From Middle English side, syde, syd, from Old English sīd (“wide, broad, spacious, ample, extensive, vast, far-reaching”), from Proto-Germanic *sīdaz (“drooping, hanging, low, excessive, extra”), from Proto-Indo-European *sēy- (“to send, throw, drop, sow, deposit”). Cognate with Low German sied (“low”), Swedish sid (“long, hanging down”), Icelandic síður (“low hanging, long”).
- Being on the left or right, or toward the left or right; lateral.
- One mighty squadron with a side wind sped.
- Indirect; oblique; incidental.
- a side issue; a side view or remark
- The law hath no side respect to their persons.
- (UK dialectal, Northern England, Scotland) Wide; large; long, pendulous, hanging low, trailing; far-reaching.
- His gown had side sleeves down to mid leg.
- (Can we find and add a quotation of Shakespeare to this entry?)
- (Scotland) Far; distant.
- second-person singular present active imperative of
after "yn", tide
|Note: Some of these forms may be hypothetical. Not every
possible mutated form of every word actually occurs.
- a fairy hill or mound
- (in plural) = áes side (“people of the fairy mounds, supernatural beings, fairies”)
- Irish sí
- Dictionary of the Irish Language, Royal Irish Academy, Dublin 
- a page (e.g. in a book)
- på høyre side - on the right-hand side
- (of a case) aspect
- (on animal) flank
From the adjective sīd