If you have a feeling of unease, you feel rather anxious or afraid, because you think that something is wrong. Sensing my unease about the afternoon ahead, he told me,`These men are pretty easy to talk to.' We left with a deep sense of unease, because we knew something was being hidden from us = anxiety
If you say that there is unease in a situation, you mean that people are dissatisfied or angry, but have not yet started to take any action. He faces growing unease among the Democrats about the likelihood of war. the depth of public unease about the economy. a feeling of worry or slight fear about something sense/feeling of unease