Seasick feeling is a term used to describe the feeling of NAUSEA and dizziness caused by the motion of a boat or ship on the water. NAUSEA, which is a common symptom of seasickness, is a six-letter word that can be used to describe this feeling. It is often accompanied by other symptoms such as vomiting, sweating, and fatigue. Seasickness can be prevented by taking medication before boarding a boat, avoiding strong smells, and focusing on a fixed point on the horizon.