1. things that fail to work properly or as expected
Usage: plural form
2. clothes, especially casual or old clothes
Usage: informal; plural form

Examples

• Half the fireworks were duds and didn’t explode.
• The new product launch was full of duds that customers returned.
• He packed his duds in an old suitcase for the camping trip.
• She changed into her work duds before starting the project.
• The artillery shell turned out to be a dud.
• Put on your old duds before we start painting the fence.