Gerund used as an uncountable noun referring to the act of expressing strong disapproval.
Definitionen
The act or practice of expressing strong disapproval or regret. His constant deploring of the new regulations annoyed everyone in the office.
deploregerundium / partizip präsens Present-participle form "deploring" can function adjectivally (e.g., "a deploring look").
Definitionen
Expressing strong disapproval or regret. There was a deploring tone in his voice when he spoke of the scandal.