WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / I / impenetrableness impenetrableness noun /ɪmpɛnɪtrəbəlnɛs/ 6 syllables 16 letters Scrabble 22 WWF 28 Definitions noun incomprehensibility by virtue of being too dense to understand impenetrability Look “impenetrableness” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →