Backhanded phrases courteous communicators avoid

Have you ever received feedback or comments from colleagues that begin with
the phrase “with all due respect”?
The phrase is typically used by someone who wants to criticize you or your
work, but that person feels the need to soften the message. Of course,
“with all due respect” means nothing of the sort. It indicates willful
disagreement with someone in a position of authority; subtle disrespect is
intended.
Here’s an example in context, pulled from a colleague&rs