Insanely is just operating as a term of emphasis in this context. Maybe that's not an easy translation? One definition for "insanely" is [0]: > to an extreme

Insanely is just operating as a term of emphasis in this context. Maybe that's not an easy translation? One definition for "insanely" is [0]: > to an extreme degree. [0] https://www.merriam-webster.com/dictionary/insanely https://www.merriam-webster.com/dictionary/insanely