dangerous

Likely to hurt people or cause serious damage or problems.

• That snake is dangerous.
• Driving on ice can be dangerous.
• They removed the dangerous chemicals from the school.

How to use it: dangerous to do something (It's dangerous to swim here.); dangerous for someone/something (These chemicals are dangerous for children.)

Similar words: unsafe, risky, hazardous

Opposites: safe, harmless

Common phrases: dangerous animal, dangerous driving, dangerous chemicals, dangerous situation