Disapprobation is not only a synonym of "disapproval" but a relative as well. Both words were coined in the mid-17th century by adding the prefix dis-, meaning "the opposite or absence of," to earlier and more "approving" words: synonyms "approbation" and "approval." The Latin verb approbare, meaning "to approve," is an ancestor of both of those words. Another descendant of "approbare" in English is "approbate," which, as you may have guessed by now, means "to approve."
the constant disapprobation of critics there was widespread disapprobation of the plan to combine the two school districts
Recent Examples on the WebHis felony conviction drew much of the disapprobation of anti-D’Souza readers, several of whom pointed out the current firestorm between the Scott administration and courts that have found Florida’s clemency process is confusing and arbitrary. Dan Sweeney, Sun-Sentinel.com, 8 May 2018 And maybe, too, for its perhaps-accidental prescience. The thing is, there are no real scandals on Scandal; the word implies a public reaction of disgust and disapprobation. Daniel D'addario, Time, 19 Apr. 2018 Latino kids are not rejected by their parents for being Latino, nor are most Muslims disowned by their parents for being Muslims, but those who are gay are often the target of their families’ disapprobation or outright hostility. Andrew Solomon, The New Yorker, 3 Feb. 2017 Gail O’Neill, a journalist and former model, said that for some, Ms. Keys has become a Rorschach test, and the disapprobation for the singer’s personal choice comes from women who are measuring themselves against it. Penelope Green, New York Times, 14 Sep. 2016