Sun·day 
(sŭndē, -dā′)
(sŭndē, -dā′)n. Abbr. Sun. or S
The day of the week that comes after Saturday and before Monday. It is considered the first day of the week in Judeo-Christian tradition. Sunday is observed as the Sabbath in most branches of Christianity.
[Middle English sonnedai, sondai, from Old English sunnandæg; see sāwel- in the Appendix of Indo-European roots.]
- Indo-European root: ekwo-
- Indo-European root: el-
- Indo-European root: em-
- Indo-European root: en
- Indo-European root: epi
- Indo-European root: er-
- Indo-European root: er-
- Indo-European root: ers-
- Indo-European root: erə-
- Indo-European root: es-
- Indo-European root: (e)su-
- Indo-European root: eu-
- Indo-European root: euə-
- Indo-European root: euə-dh-r̥
- Indo-European root: gal-
- Indo-European root: gel-
- Indo-European root: gembh-
- Indo-European root: gemə-
- Indo-European root: genu-
- Indo-European root: genu-
- Indo-European root: genə-
- Indo-European root: ger-
- Indo-European root: gerbh-
- Indo-European root: gerə-
- Indo-European root: gerə-