Sunday Pronunciation: /ˈsʌndeɪ; ˈsʌndɪ/Translate Sunday | into French | into Italian | into Spanish German translation of Sundayn. Sonntag Sunday opening = die sonntägliche Öffnung Sunday trading = sonntägliche Ladenöffnung see also FridaySunday in other Oxford dictionaries Definition of Sunday in the British & World English dictionary Definition of Sunday in the US English dictionary