ETYM Old Eng., haughty, difficult, dangerous, from Old Fren. dangereus, French dangereux. Related to Danger.
1. Causing fear or anxiety by threatening great harm; SYN. grave, grievous, serious, severe.
2. Involving or causing danger or risk; liable to hurt or harm; SYN. unsafe.
ETYM Cf. French hasardeux.
Involving risk or danger; SYN. risky, venturesome, venturous.
ETYM Old Fren. perillous, perilleus, French périlleux, Latin periculosus. Related to Peril.
1. Full of, attended with, or involving, peril; dangerous; hazardous.
2. Daring; reckless; dangerous.
ETYM Latin pestilens, -entis, from pestis pest: cf. French pestilent.
Likely to spread and cause an epidemic disease; SYN. pestilential, plaguelike, plaguey.