The term COMPLETELY LOST can be solved by two crossword solutions: ASEA (4 letters) and ATSEA (5 letters). ASEA stands for 'At Sea' and is a nautical term used to describe a vessel that is not in port. ATSEA stands for 'At the Sea' and is also a nautical term used to describe a vessel that is not in port, but is located near the sea. Both terms are used to describe a situation where a vessel is lost or unable to find its way back to port.