Synonyms for Substructure

Synonyms starting with letter U

• understructure

  room on lower floor of building, basis for something physical or mental, foundation
• underpinning

  basis for something physical or mental, something that holds up structure, foundation
• underside

  foundation, bottom
• underbuilding

  room on lower floor of building
• underneath

  foundation, bottom
• underbelly

  foundation, bottom
• undersurface
• upright
• underpinnings
• underground room
• umbra
• understruction
• underprop