The crossword solutions for the term 'I KNOW THAT!' are 'EVEN' and 'AHA'. The word 'EVEN' is an adjective meaning 'level, flat, or regular in surface or character; not rough or irregular' and is often used to describe something that is balanced or equal. The word 'AHA' is an interjection used to express recognition, understanding, or realization. It is often used when someone has figured out a solution to a problem or has made a discovery.