The term 'bouncing off the walls' is an idiom used to describe someone who is full of energy and is very active. The crossword solutions for this term are PERKY (5 letters), DELIRIOUS (9 letters), ECHO (4 letters), RESTLESS (8 letters), ECHOING (7 letters), RICOCHETING (11 letters), HYPER (5 letters), MANIC (5 letters), ECHOED (6 letters), and AMOS (4 letters). All of these words can be used to describe someone who is bouncing off the walls, as they all imply a high level of energy and activity.