doomsdayPronunciation: /ˈduːmzdeɪ/Translate doomsday | into Italian | into Spanish Definition of doomsday noun the last day of the world’s existence: Bede believed that the time of doomsday is concealed from mankind (in religious belief) the day of the Last Judgement. a time or event of crisis or great danger: [as modifier]:in all the concern over greenhouse warming, one doomsday scenario stands outPhrases till doomsday informal forever:we’ll be here till doomsday if you go blethering onOrigin: Old English dōmes dæg (see doom, day)doomsday in other Oxford dictionaries Definition of doomsday in the US English dictionary
