A very strong feeling of no respect for someone or something that you think is stupid or has no value. (Cambridge Dictionary)
Open dislike and disrespect or derision often mixed with indignation. (Merriam – Webster)
An expression of contempt or derision. (Merriam – Webster)
An object of extreme disdain, contempt, or derision : something contemptible. (Merriam – Webster)
If you scorn someone or something, you feel or show contempt for them. (Collins Dictionary)
A feeling and expression of contempt or disdain for someone or something. (Oxford Dictionaries)
Scorn. Your Dictionary.
No-deal Brexit ‘war game’ prompts scorn.