Sunday

• POS: Noun
• HYPHEN: Sun=day

CIDE DICTIONARY

Sunday, n. [AS. sunnandæg; sunne, gen. sunnan, the sun + dæg day; akin to D. zondag, G. sonntag; -- so called because this day was anciently dedicated to the sun, or to its worship. See Sun, and Day.].

 The first day of the week, -- consecrated among Christians to rest from secular employments, and to religious worship; the Christian Sabbath; the Lord's Day.  [1913 Webster]

Advent Sunday, Low Sunday, Passion Sunday, etc. See under Advent, Low, etc.

Syn. -- See Sabbath.

Sunday, a. 

 Belonging to the Christian Sabbath.  [1913 Webster]

Sunday letter. See Dominical letter, under Dominical. -- Sunday school. See under School.

OXFORD DICTIONARY

Sunday, n. & adv.
--n.
1 the first day of the week, a Christian holiday and day of worship.
2 a newspaper published on a Sunday.
--adv. colloq.
1 on Sunday.
2 (Sundays) on Sunday; each Sunday.

Idiom

Sunday best joc. a person's best clothes, kept for Sunday use. Sunday letter = dominical letter. Sunday painter an amateur painter, esp. one with little training. Sunday school a school for the religious instruction of children on Sundays.

Etymology

OE sunnand{aelig}g, transl. of L dies solis, Gk hemera heliou day of the sun

THESAURUS

Sunday

Christmas, First day, Sabbath, church calendar, day of rest, dies non, ecclesiastical calendar, fast, feast, go on furlough, go on leave, holiday, holy day, holytide, make holiday, take a holiday, take leave, vacation, weekend

ROGET THESAURUS

Sunday

Periodicity

N regularity of recurrence, periodicity, intermittence, beat, oscillation, pulse, pulsation, rhythm, alternation, alternateness, alternativeness, alternity, bout, round, revolution, rotation, turn, say, anniversary, jubilee, centenary, catamenia, courses, menses, menstrual flux, rota, cycle, period, stated time, routine, days of the week, Sunday, Monday, months of the year, January, feast, fast, Christmas, Easter, New Year's day, Allhallows, Allhallowmas, All Saints' Day, All Souls', All Souls' Day, Ash Wednesday, bicentennial, birthday, bissextile, Candlemas, Dewali, groundhog day, Halloween, Hallowmas, Lady day, leap year, Midsummer day, Muharram, woodchuck day, St. Swithin's day, natal day, yearbook, yuletide, punctuality, regularity, steadiness, periodic, periodical, serial, recurrent, cyclical, rhythmical, recurring, intermittent, remittent, alternate, every other, hourly, diurnal, daily, quotidian, tertian, weekly, hebdomadal, hebdomadary, biweekly, fortnightly, bimonthly, catamenial, monthly, menstrual, yearly, annual, biennial, triennial, centennial, secular, paschal, lenten, regular, steady, punctual, regular as clockwork, periodically, at regular intervals, at stated times, at fixed established, at established periods, punctually, de die in diem, from day to day, day by day, by turns, in turn, in rotation, alternately, every other day, off and on, ride and tie, round and round.