The term 'wonder-ful word' is composed of three crossword solutions: GEE, OOH, and FUL. GEE is an interjection used to express surprise or excitement, while OOH is another interjection used to express admiration, wonder, or awe. FUL is a suffix that is often used to indicate something is full of a certain quality, in this case, wonder. Therefore, the term 'wonder-ful word' can be interpreted as a phrase to describe something that is full of wonder and amazement.