dangerous
dangerous — adjective
1. Someone or something that is dangerous can easily hurt you. The word describes p
Someone or something that is dangerous can easily hurt you. The word describes people, animals, objects, places, or actions that are not safe because they threaten your body or your life.
Walid was warned not to swim in the river because the current was dangerous.
The old staircase was so dangerous that the landlord finally agreed to fix it.
so + adjective + that clause for result
Naoko keeps a dangerous-looking knife in her kitchen drawer.
It is dangerous to drive a car when the roads are covered with ice.
Linh's dog is dangerous around strangers and must wear a muzzle in the park.
- hazardous
more formal; often describes materials, conditions, or work environments rather than people or animals
- unsafe
focuses on lack of safety or protection; common for buildings, products, or roads
- risky
implies a choice with uncertain outcome; usually less severe than 'dangerous'
- perilous
formal or literary; suggests a very high level of danger
文法句型
be + dangerous
dangerous + noun
it is dangerous + to-infinitive
so + dangerous + that clause
用法筆記
Frequently describes people, animals, objects, places or activities that pose a direct physical threat. The most common patterns are 'be + dangerous' (The dog is dangerous) and 'dangerous + noun' (a dangerous road).
常見錯誤
2. Used when a situation, decision, or idea is likely to lead to trouble, loss, or
Used when a situation, decision, or idea is likely to lead to trouble, loss, or other negative outcomes, even though no one is at risk of physical injury or death.
Eleni knew that spreading rumours about her colleague was a dangerous game to play.
collocation: a dangerous game
It can be dangerous for a company to ignore customer complaints for too long.
it + be + dangerous + for + noun + to-infinitive
The politician's views on education reform proved dangerous for his career.
Constanza realised that borrowing money from a loan shark was a dangerous mistake.
- risky
common alternative; focuses on uncertainty of outcome rather than severity of harm
- problematic
less severe; suggests difficulties rather than real danger
- dicey
informal; describes a situation that may go wrong
文法句型
be + dangerous
dangerous + abstract noun
it is dangerous + for + noun + to-infinitive
dangerous + to + noun phrase
用法筆記
Often used with abstract nouns such as 'game', 'move', 'step', 'policy', or 'precedent' to describe choices or situations that create the risk of a bad outcome. Unlike sense 1, the risk here is to reputation, money, relationships, or stability — not to physical safety.