Definitions of perilous

1. Perilously.

2. fraught with danger; " dangerous waters"; " a parlous journey on stormy seas"; " a perilous voyage across the Atlantic in a small boat"; " the precarious life of an undersea diver"; " dangerous surgery followed by a touch- and- go recovery"

3. Dangerous; full of peril.

4. Daring; reckless; dangerous.

5. Full of danger; dangerous; involving risk.

6. Full of perildangerous.

7. Dangerous.

8. Full of perils; hazardous.

9. Dangerous; hazardous.