WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / S / substructure substructure noun 12 letters Scrabble 16 WWF 21 Definitions noun lowest support of a structure basefootfoundationfundamentgroundworkunderstructure noun the basic structure or features of a system or organization infrastructure Look “substructure” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →