Tra từ dangerous - Từ điển Oxford Learners Wordfinder Dictionary

1 dangerous
2 not dangerous
3 doing sth dangerous
4 avoiding danger

1 dangerous
- if sb/sth is likely to hurt or kill sb/sth, it is dangerous
Boxing is a dangerous sport. ◎ a dangerous criminal ◎ a dangerous road
- an activity that is dangerous is risky
It was a risky operation, but without it he would certainly have died.
- the chance that sb/sth might be hurt or killed or that sth unpleasant might happen: danger (noun C/U), risk (noun C/U)
There was a real danger that the building would collapse. ◎ Journalists are used to facing danger. ◎ 'Are there any risks involved in taking this medicine?' 'No, there's no risk at all.'
- if sb/sth is so dangerous that it can kill you, it is deadly, lethal
a deadly poison ◎ a lethal weapon
- if a problem or situation is important because it might be dangerous, it is serious; noun (U): seriousness
a serious illness ◎ the increase in serious crime ◎ I don't think you understand the seriousness of the situation.
- a situation or an event that is dangerous and serious: emergency; adjective: emergency (only before a noun)
The doctor was called out on an emergency. ◎ The plane had to make an emergency landing.
- a person or a thing that is dangerous: danger (to sb/sth), threat (to sb/sth), risk (to sb/sth)
the dangers of drugs ◎ a threat to national security ◎ Throughout the journey we were exposed to a lot of risks.
- if sth dangerous may happen to you, you are in danger (of sth), at risk (of sth)
I was in danger of losing my job. ◎ at risk of catching cholera

2 not dangerous
- not dangerous: safe (adverb safely); noun (U): safety
Don't sit on that chair. It isn't safe. ◎ You should put your wallet in a safe place when you are walking in the street. ◎ a safe driver ◎ Is it safe to drink the water here? ◎ Drive safely!
- free from danger or from possible injury, damage, etc: safe (from sb/sth); noun (U): safety
I never feel safe walking home alone at night. ◎ Keep the papers where they will be safe from fire. ◎ She has been missing for several days and police now fear for her safety. ◎ road safety ◎ In the interests of safety, smoking is forbidden.
- not hurt or damaged: safe and sound
The children were found safe and sound after spending a night in the forest.
- not likely to be lost; safe: secure; noun (U): security
financial security
- when a dangerous situation has ended, you are out of danger

3 doing sth dangerous
- to cause danger to sb/sth: put* sb/sth at risk, (formal) endanger sb/sth
Don't put your health at risk by overworking. ◎ to endanger sb's life
- to do sth even though you know that sth dangerous or unpleasant may happen as a result: risk sth
If you give up your job now, you risk a long period of unemployment.
- to do sth that you know might be dangerous: take* a risk, take* risks, take* chances
If you want to succeed in life you'll have to take risks.
- to do sth for which you might be killed or punished: risk your life, risk your neck
The man risked his life to rescue the boy.
- not afraid of doing dangerous or physically difficult things: brave (adverb bravely)
- to try to persuade sb to do sth dangerous or difficult to show that they are brave: dare sb (to do sth)
I dare you to run across the railway track when the train is coming.
- an experience that is unusual, exciting or dangerous: adventure (noun C/U)
※ more on being brave BRAVE

4 avoiding danger
- to tell sb about sth bad which might happen, and to advise them to be careful: warn sb (of/about sth), warn sb against (doing) sth, warn sb not to do sth; noun (C/U): warning
They put up a red flag to warn you against swimming when it's dangerous. ◎ I warned you not to disturb the dog while it was asleep.
- a machine which warns you about danger with a bell or other loud noise: alarm
I don't know why the car alarm went off.
※ more on warning WARN
- to keep sb/sth safe from danger or attack: protect sb/sth (against/from sb/sth); noun: protection
vaccines to protect children from polio
- to make or keep sb/sth safe from danger, death, loss, etc: save sb/sth (from sth)
You saved my life!
- to save sb/sth from sth that is dangerous or unpleasant: rescue sb/sth (from sb/sth); noun: rescue; a person who does this: rescuer
The boys were rescued from the burning house. ◎ the mountain rescue services ◎ Rescuers arrived at the scene within the hour.
- to cause sth not to happen: prevent sth, prevent sth (from) happening, avoid sth
How can we prevent war breaking out? ◎ We only just managed to avoid a serious crash.
- a thing that you do in order to avoid danger or problems: precaution (often plural)
We took the precaution of taking out travel insurance before we went on holiday.
- to be careful or pay special attention to sb/sth that is dangerous: watch out (for sb/sth), look out (for sb/sth)
Watch out! There's a hole in the pavement. ◎ Look out for the low beam at the top of the stairs.
※ more on protecting people and preventing danger PROTECT, AVOID/PREVENT
- a written notice warning people to be careful of sb/sth may say Beware (of sb/sth) or Danger!
Beware of the dog! ◎ Danger - men at work!