Unused/ˌʌnˈjuːzd/ Definition 1 of 2Pro Tip 1/3Brand New Indicates something is brand new and has never been activated or employed in any way. He sold his car as unused, it was in perfect condition. Pro Tip 2/3Waste Prevention Suggests opportunities for being efficient by using items that are currently in excess. Don't buy more notebooks; we have plenty of unused ones. Pro Tip 3/3Potential Opportunity Refers to resources or abilities that exist but are not being utilized to their full possibility. Her unused talent for singing was surprising to all.