The term 'Word of Wonder' can be broken down into two crossword solutions: GOSH (4 letters) and GEE (3 letters). GOSH is an interjection used to express surprise, amazement, or admiration. It is often used as an exclamation of wonder or awe. GEE is also an interjection used to express surprise, but it is usually used to express milder surprise than GOSH. Both words are commonly used in informal speech and writing.