GAH! is an interjection used to express surprise, dismay, or frustration. It is often used in response to a sudden realization or unexpected event. The two crossword solutions for this term are DOH and AARGH. DOH is an interjection used to express disappointment, frustration, or surprise, while AARGH is an expression of anger, frustration, or surprise. Both terms are used to express strong emotions in response to a situation.