Here are two words that those who use them are/were doing so to intentionally insult.

"Democrat" as in "the 'Democrat' party." The correct use would be "DemocratIC party," because "Democratic" is an adjective. The people who use this phrase know they are saying it wrong, and they do so intentionally as if spitting the name out. This belies any pretense of desiring "civility." If one is civil, one presents their argument in a noninflammatory way. One does not "bait" one's opponent.

Also, back when "W" was still president, he would say "nukular" instead of "noo-clee-ir. In the beginning, many people thought it was cutesy. But he kept using it even though he knew it was stupid-speak because he knew that those of us who knew it was wrong winced every time he did it. And he liked tormenting people.

Thoughtful people who are working towards a higher level of understanding can ignore these trite insults. But those who deliver them are not interested in a higher level of understanding.

Saul