The phrase "was nauseous" indicates feeling sick to one's stomach. However, there are various synonyms for this sensation, such as queasy, sickly, nauseated, and bilious. Queasy refers to a feeling of unease or slight nausea that can be caused by various factors such as motion sickness or anxiety. Sickly is also commonly used to describe someone who feels unwell or who has an overall unhealthy appearance. Nauseated is another term used to describe a feeling of sickness or disgust, often brought on by an unpleasant odor or taste. Bilious is a more specific term that describes feelings of nausea and vomiting, often associated with a bile-filled stomach.