WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / M / mercilessness mercilessness noun /mɜrsɪlɪsnɛs/ 4 syllables 13 letters Scrabble 17 WWF 21 Definitions noun feelings of extreme heartlessness crueltypitilessnessruthlessness noun inhumaneness evidenced by an unwillingness to be kind or forgiving unmercifulness Look “mercilessness” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →