The crossword solutions for the term 'Oh, ___!' (WOW!) are MOMMA (5 letters) and GOD (3 letters). Momma is an informal term used to refer to one's mother, usually in a loving way. It is often used as an exclamation of surprise or joy. GOD is a term used to refer to a higher power or deity, usually in a religious context. When used as an exclamation, it is usually to express surprise or awe. Therefore, when combined, the phrase 'Oh, Momma!' or 'Oh, GOD!' can be used to express surprise or joy.