substructure

Meanings

the basic structure or features of a system or organization
lowest support of a structure

Synonyms

base, foot, foundation, fundament, groundwork, infrastructure, understructure

Scrabble Score: 16

substructure is a valid Scrabble (US) TWL word
substructure is a valid Scrabble Word in Merriam-Webster MW Dictionary
substructure is a valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 21

substructure is a valid Words With Friends word