Understructure in a sentence as a noun

If GitHub is normalizing comments anyways, I wonder they could have adopted a CFG. Overall this a step in the right direction but the whole saga is a perfect microcosm of our understructure cranking out pooly-understood stuff which comes back to bite us and cannot be tamed.

Understructure definitions

noun

lowest support of a structure; "it was built on a base of solid rock"; "he stood at the foot of the tower"

See also: foundation base fundament foot groundwork substructure