WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / D / dead-letter dead-letter noun /dɛdlɛtər/ 11 letters Scrabble 12 WWF 13 Definitions noun mail that can neither be delivered nor returned dead mail noun the state of something that has outlived its relevance non-issue Look “dead-letter” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →