The term 'REARWARD, AT SEA' can be solved by three different crossword solutions: AFT (3 letters), ABAFT (5 letters), and ASTERN (6 letters). AFT is an adverb meaning 'toward the stern of a ship'. ABAFT is an adverb meaning 'farther back than; behind'. ASTERN is an adverb meaning 'toward or at the stern of a ship'. All three terms refer to the back of a ship, and are used to describe the direction of a vessel when it is at sea.