You searched for: “most inalterably
inalterably (adverb), more inalterably, most inalterably
Referring to something that is impossible to redo or to restructure: Contractors told the apartment owner that he had an inalterably old building that should be torn down, and then replaced with a new building.
This entry is located in the following units: -ably (page 6) alter- (page 3)