Meaning unknown. It was a rare name when British author Marie Corelli used it for the Norwegian heroine of her novel Thelma (1887). The name became popular around the end of the 19th century after the novel was published. It is sometimes claimed to derive from Greek θέλημα (thelema) meaning “will”, though this seems unlikely.
People with the name Mitsu have a deep inner desire to create and express themselves, often in public speaking, acting, writing or singing. They also yearn to have beauty around them in their home and work environment.
People with the name Dila have a deep inner desire to use their abilities in leadership, and to have personal independence. They would rather focus on large, important issues, and delegate the details.