The term 'Dull-Witted One' can be described by two crossword solutions, DODO and DOLT. The DODO is an extinct flightless bird that was native to the island of Mauritius in the Indian Ocean. It was a large, clumsy bird that was easily hunted and became extinct in the late 17th century. A DOLT is a person who is slow-witted or lacking in common sense. This term is often used to describe someone who is not very intelligent or who acts foolishly.