stressful

An event or situation that causes worry and anxiety is stressful.

When we say that something is stressful, we usually mean it's making us feel really worried or anxious. We often use this word to describe work or school situations where there's a lot of pressure to get things done quickly. For example, "I have so much homework tonight, I'm feeling really stressed out." Or, "My boss just gave me an impossible deadline, it's so stressful!" We might also talk about life events like moving to a new place, dealing with financial problems, or going through a break-up - all of these can be super stressful. The key is that our normal way of coping with things isn't working, and we feel overwhelmed.