The crossword solutions for the term 'NA NA' are 'SHAME' (5 letters) and 'NOTHING' (7 letters). SHAME is an emotion that is often associated with guilt, regret, or embarrassment. It is a feeling of dishonor or disgrace that can be caused by one's own actions or the actions of someone else. NOTHING is a concept that refers to the absence of anything, including objects, ideas, or feelings. It is often used to describe a lack of something or a void in one's life.