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underbuilding

Noun CEFR C1

Definitions

A substructure; foundation; infrastructure.

Examples

“It appears from the evidence that although the Dean of Guild authorities considered the defective underbuilding to have⟳ been sufficient to warrant the demolition of the wall, it must have⟳ otherwise been in a weak and decayed condition.”
“The rubble concrete underbuilding has a uniform thickness of 5 feet, where the depth is less than 10 feet, but for greater depths the underbuilding is 6 feet thick at the top.”

CEFR level

C1
Advanced
This word is part of the CEFR C1 vocabulary — advanced level.
See all C1 English words →

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