I am looking for a word to use in this context...
A teacher is scheduled to teach English 100. He has taught it before and knows it to be a grind. He believes that, like always, it will be populated by students who have built up a healthy disdain for English. So, he is sitting in his office minutes before the class begins feeling painful anticipation over his first lecture.
Psychology uses "Negative Anticipation" for these moments. I am hoping for a single word. The closest word I've found is "pang", but it sounds incomplete without "of something."
So, I would like a word that signifies the painful looking forward to an undesirable inevitability. This isn't a feeling of fear, just discomfort at knowing that what's to come will be arduous and tedious.