The term 'Gung-Ho' is derived from the Chinese phrase 'Kung-Ho', which translates to 'work together'. It is often used to describe someone who is enthusiastic and eager to take on a task. The crossword solution for this term is 'RARIN', which is an adjective meaning 'eager, enthusiastic, and ready to go'. This term is often used to describe someone who is willing to take on a challenge with enthusiasm and energy.