Definitions

1. verb

to make something no longer sacred or holy; to profane something

“The destruction of the ancient temple was seen as a way to unhallow the site for the new development.”

2. noun

the act of making something no longer sacred or holy

“The unhallowing of the temple was a highly contentious issue in the community.”

3. transitive verb

to declare something to be no longer holy or sacred

“The priest unhallowed the altar before the ritual began.”

4. verb

to make something seem less impressive or sacred

“The new skyscraper seemed to unhallow the old historic buildings in the area.”