How do you reject Engineering candidates?

I would love to give and receive this type of thoughtful feedback every time I go to hire somebody or apply for a job. Even if you don't end up hiring somebody, they'll still walk away with a good impression of you and tell their engineering friends about your company's high character, so it's not time wasted to do this.

The problem with giving this kind of feedback is that if you word something incorrectly or something is accidentally (or deliberately) misinterpreted, you can open yourself up to a discrimination or other type of lawsuit.

So this is the big barrier (for me at least) to giving out this level of feedback to every potential hire.