Mal de mer, which is French for motion sickness, can be a common issue for many people while travelling on a boat, plane or even in a car. There are numerous synonyms for mal de mer, including seasickness, motion sickness, travel sickness, motion-induced sickness, and kinetosis. Some other words that are closely associated with these symptoms include nausea, dizziness, and queasiness. The best way to prevent mal de mer is by taking preventative measures such as taking motion sickness medication or sitting in a particular spot on the vehicle. Staying hydrated, avoiding alcohol, and focusing on a distant object can also help reduce the onset of these symptoms.