The crossword solution for the term 'Bounce Off The Walls' is 'ECHO'. This term is often used to describe someone who is very energetic and lively, as if they are bouncing off the walls. It can also be used to describe someone who is very talkative and loud. The word ECHO is derived from the Greek word 'ekho', which means 'to sound out'. This term is often used to describe a situation in which a sound is repeated or echoed back.