- In an insane manner; not sanely.
- 1907, Barbara Baynton, Sally Krimmer; Alan Lawson, editors, Human Toll (Portable Australian Authors: Barbara Baynton), St Lucia: University of Queensland Press, published 1980, page 296:
- Gloating silently, she laved handfuls of hot sand over her, her mind alternating sanely and insanely.
- To a great degree; very much.
- That ramp is insanely difficult to jump.
- Disney has some insanely fun roller coasters.