The phrase "pejorative way" means using words or expressions that are derogatory, negative, or disrespectful towards someone or something. Full definition
Even the word «socialism» has been used in a harshly pejorative way. (religion-online.org)
The term «black box» will be bandied around in a highly pejorative way. (greenbackd.com)
So David, did you read the link on «Tahrif» — were you aware of this pejorative way orthodox Islam (and even much of moderate Islam) views Christian and Jewish scripture? (nakedpastor.com)