undeg

un (“one”) +‎ deg (“ten”) = “one [on] ten”

• (North Wales) IPA^(key): /ˈɨ̞ndɛɡ/
• (South Wales) IPA^(key): /ˈɪndɛɡ/

undeg m or f (ordinal undegfed)

1. (archaic) eleven
   • Gwelygorddau Powys, Cynddelw

     Undeg fad awen: undegfed awydd
      A weinydd fy nhynged,
     O’m gwawd ran, o’m bau, o’m barddged,
     O walch falch, o Weilchiawn giwed.

   • 1832: “Cynhafal”, Efelychiad o Horace (Emulation of Horace), book III, ode 9, “Ymddiddan rhwng Madog a Rhonwen”

     Pan oeddwn gan ti yn dderbyniol,
      Heb undeg mwy hardd-deg ei raen;
     Yn gallu ‛th gofleidio yn anwylaidd,
      Nid ydoedd un Brenin o’m blaen.

   • 1841: Hugh James Rose and Samuel Roffey Maitland [eds.], The British Magazine, and Monthly Register of Religious and Ecclesiastical Information, Parochial History, and Documents Respecting the State of the Poor, Progress of Education, &c., volume 19, page 665

     Naw cànt dau undeg wyth
     Y bu yn ymlwyth
     Yn arwain mysg-lwyth,
      Masgl a fæmina.

     Nine hundred and thirty years   [lit.: Nine hundred, two eleven, and eight]
     They existed sorrowing,
     Bearing a mixed-race,
      Male and female.

• (vigesimal) un ar ddeg
• (decimal) un deg un

• “Undeg” listed on page 605 of William Owen Pughe’s Dictionary of the Welsh Language (1832)
• “Undeg” listed on page 270 of William Richards’ Welsh and English Dictionary (1832)
• “Undeg” listed on page 303 of Ellis Jones’ New Pocket Dictionary of the Welsh and English Languages (1840)