Amount of words in Rectangular Shape box problem

Good Afternoon Experts

In the file attached, i am trying to achieve a situation where if i click one of the members in the list box , the interpretation of the of the word would appear in the rectangular shape box. the problem is that , i cant seem to see all the explanation in the rectangular shape box when i click the word. i tried to reduce the font but without success. is there a way to have all the explanation of the word appear in the box? thanks