WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / N / nightmarish nightmarish adjective /naɪtmɜrɪʃ/ 3 syllables 11 letters Scrabble 20 WWF 21 Definitions adjective extremely alarming bloodcurdlinghair-raising Look “nightmarish” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →