1. past tense of moulder; to decay gradually or crumble away
Usage: British spelling

Examples

• The old books had mouldered in the damp basement for decades.
• The abandoned castle’s walls mouldered under years of neglect.
• Ancient manuscripts mouldered away in forgotten archives.
• The wooden fence posts mouldered in the wet soil.
• Her dreams of stardom mouldered as years passed without opportunity.
• The fruit mouldered in the heat before anyone could eat it.