síd

sí +‎ -d (possessive suffix)

• IPA^(key):

síd

1. second-person singular single-possession possessive of sí

• síth

From Proto-Celtic *sīdos (“mound (inhabited by fairies); peace”), from Proto-Indo-European *sēds, from *sed- (“to sit”).

Nominative/vocative/accusative singular and dual:

• IPA^(key): /sʲiːð/

Dative singular:

• IPA^(key): /sʲiːðʲ/

síd n (genitive síde, nominative plural síde)

1. fairy mound
2. (in the plural) fairies
   • c. 1050–1100, Fíacc’s Hymn, published in Thesaurus Palaeohibernicus (reprinted 1987, Dublin Institute for Advanced Studies), edited and with translations by Whitley Stokes and John Strachan, vol. II, p. 317, l. 41:

     For túaith Hérenn bái temel · túatha adortais síde

     On the folk of Ireland there was darkness: the peoples used to worship fairies.

   Synonym: áes síde

3. peace

• Middle Irish: side
  • Irish: sí, síth
  • Manx: shee
  • Scottish Gaelic: sìth, sìdh

• Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “1 síd, síth (‘fairy mound’)”, in eDIL: Electronic Dictionary of the Irish Language
• Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “2 síd, síth (‘peace’)”, in eDIL: Electronic Dictionary of the Irish Language