Sundry means various, miscellaneous, or several different kinds of things. When a store sells sundry items, it carries all sorts of different products that don't fit into one neat category. A teacher might tell students to bring sundry supplies for an art project: markers, scissors, glue, construction paper, and whatever else they think they'll need.

The word has an old-fashioned flavor to it. You're more likely to see it in books than hear it in everyday conversation. But it shows up in useful places: a ship's captain might record sundry expenses in the logbook, meaning all the various small costs that came up during the voyage. A detective investigating a case might collect sundry clues, gathering different kinds of evidence from different sources.

The phrase all and sundry means everyone, without exception. If you announced something to all and sundry, you'd be telling absolutely everybody who would listen.

Think of sundry as a fancy way of saying “various and assorted”: it groups together different things that don't quite belong in the same category but need to be mentioned together anyway.