insane
in sayn
- a  afflicted with or characteristic of mental derangement
                    
                        
                            
 was declared insane
 insane laughter
- s  very foolish
                    
                        
                            
 took insane risks behind the wheel
- It was just like insane carpentry noises, hitting the walls like with a hammer.
- A criminally insane killer who escaped during a mental hospital field trip to a county fair remained on the run Friday, and furious residents and officials wondered why such a .
- Gerald Bolton, 35, has been in and out of insane asylums for 19 years.