Hazardous

Origin

From Middle French hasardeux

Full definition of hazardous

Adjective

1. Risky, dangerous, with the nature of a hazard.
• 2014-06-14, It's a gas, But out of sight is out of mind. And that...means that many old sewers have been neglected and are in dire need of repair. If that repair does not come in time, the result is noxious and potentially hazardous.
2. Exposing to loss or evil.
3. Of or involving chance.

Derived terms

• hazardously
• ultrahazardous