The crossword solution for the term 'Jolly Fellow' is 'Roger', which is a 5-letter word. Roger is a popular name, derived from the Germanic elements hrod, meaning 'FAME', and ger, meaning 'SPEAR'. It is also associated with the Latin word rogare, meaning 'to ask'. The name has been used since the Middle Ages and is still popular today. In English, the name Roger is often used to describe someone who is cheerful and jovial.