A tribulation is a difficult or trying [challenging or tough] situation. It refers to a period of suffering, hardship, or distress [pain or difficulty]. For example, losing a job, going through a divorce, or dealing with a serious illness can all be considered tribulations.
Very Simple Definition:
A tribulation is a really tough time. It’s when things are really hard and you feel sad or stressed. For example, when someone is really sick or when someone loses their job, those are tribulations.