The word discarded means to get rid of something or to dispose of it. The antonyms of this word are collect, keep, save, retain, and preserve, among others. When an item or object is collected, it means it is picked up and kept for future use. Keeping something involves ensuring that the item is safe and in good condition. Saving involves putting something aside for a later use or purpose. Retaining means to continue to hold onto something or someone, while preserving means protecting something to maintain its quality, form or condition. All of these antonyms describe actions that involve keeping or holding onto something valuable or useful, rather than getting rid of it.