A foreboding is a foretelling, a sign or a glimpse, that "something wicked this way comes" — or might come. If something doesn't "bode" well, it means that the future doesn't look good. A foreboding is a glimpse or a feeling that bad things are going to happen. It's a premonition, or look into the future.

Is the word intense a mood?

acute, strong, or vehement, as sensations, feelings, or emotions: intense anger.

Is foreboding an emotion?

Here is what good old Merriam-Webster says forebode means: “to have an inward prediction of, foretell or predict.” So, when Brené talks about foreboding joy, she is talking about two very different emotions that many of us often experience simultaneously.