The two crossword solutions for the term 'HOW WONDERFUL!' are 'OOH' and 'THATSGREAT'. OOH is an expression of surprise or admiration, usually uttered in response to something unexpected or remarkable. It is often used as an interjection to express joy or excitement. THATSGREAT is an expression of enthusiasm or approval, typically used to show appreciation for something that has been done or achieved. It is often used as a way to express joy or satisfaction.