The idiom "all and sundry" means everyone, without exception. It is used to refer to a group of people or things that includes everyone or everything, without leaving anyone or anything out.
For example, if you say "I invited all and sundry to my party," it means you invited everyone you could think of, without excluding anyone. Similarly, if you say "The store is open to all and sundry," it means that anyone is welcome to come in and shop.
This idiom is often used in formal or informal situations, and it can be used in both spoken and written English. It is a useful phrase to use when you want to emphasize that no one or nothing has been left out or excluded from a group or activity.
In summary, "all and sundry" means everyone or everything, without exception, and it is used to refer to a group of people or things that includes everyone or everything.
• The politician's speech was heard by all and sundry, as it was broadcasted on national television.
• The store advertised their sale to all and sundry, hoping to attract as many customers as possible.
• The author's latest novel was eagerly anticipated by all and sundry, with fans lining up for hours to get their copy signed.
• The company's new policy was announced to all and sundry during the staff meeting, leaving everyone with mixed feelings.
• The organizer of the event made sure to send out invitations to all and sundry, ensuring a diverse and inclusive crowd.
• I invited all and sundry to my birthday party, even my neighbor's cat.