an affront
Examples
Against the background of this luminous and sparkling stage Bond stood in the sunshine and felt his mission to be incongruous and remote and his dark profession an affront to his fellow actors.
I would like to take you seriously, but to do so would be an affront to your intelligence.
I respect women like Gloria Steinem who paved the way. But when you say 'feminist' now, there is a message that if you are sexy and you acknowledge that part of your personality publicly, then it's somehow an affront to women. And I reject that.
In this heat every extra gesture was an affront to the common store of life.
I speak a language full and intelligible. I deal not in hints and intimations. [...] First, that I may be clearly understood. Secondly, that it may be seen I am in earnest; and, thirdly, because it is an affront to truth to treat falsehood with complaisance.
It is an affront to treat falsehood with complaisance.