| abuse |
When you abuse something, you use it in a way that is wrong or bad. If people abuse pills, for example, they take them in a different way from how the doctor tells them to take them. This can be dangerous. [1/4 definitions] |
| acid |
An acid is a kind of chemical substance. When something has a lot of acid in it, like lemons, it tastes sour. We eat and drink many things that contain acid. A very strong acid can be dangerous, though. It can burn something that it touches. [1/2 definitions] |
| adventure |
a journey or activity that is dangerous or exciting. [2 definitions] |
| alert |
When you alert someone, you tell them about something they should know about. We usually alert people about something that might be dangerous or to make sure they know about something important to them. [1/3 definitions] |
| bacteria |
microscopic organisms that often play a role in the decay of living things, the process of fermentation, and sometimes in causing disease. Bacteria are each made up of only one cell, but different kinds of bacteria can take different shapes. These organisms live in all parts of the earth including oceans, deserts, glaciers, hot springs, and in the bodies of most living things. While some kinds of bacteria are dangerous, most kinds are useful because they help in the digestion of food, in the making of soil, in the creation of medicines, and in many other natural processes. |
| bear2 |
A bear is a large, powerful animal with thick fur, sharp claws, and a short tail. Bears usually live in the forest or in cold areas of the world. Most people are afraid of bears because they can be very dangerous. Some kinds of bears are black bears, grizzly bears, and polar bears. |
| brink |
A brink is a kind of edge. It is the top edge of a cliff or steep hill. A brink is a dangerous spot. [1/2 definitions] |
| challenge |
When you challenge someone to do something, you invite them to do something difficult or dangerous. Often when people challenge someone, they act as if that other person can't do it or as if they could do it better. [1/4 definitions] |
| chigger |
the tiny larva of a mite that lives in the skin of animals and causes great itching. It is usually not dangerous but can sometimes spread disease. |
| compound1 |
In chemistry, a compound is a substance formed by combining two or more chemical elements in certain amounts. When the elements are combined, they make a new thing that is different from the parts that make it up. For example, some elements that are completely safe when they are separate could make up a compound that can explode. Or, two elements that are dangerous by themselves could become very safe in a compound. [1/5 definitions] |
| critical |
of the nature of a crisis; serious or dangerous. [1/3 definitions] |
| dangerous |
When something is dangerous, it is not safe. When you do a dangerous thing, it means you might get hurt by doing it. When an animal is dangerous, it means that the animal might hurt you. A dangerous place is a place where you might get hurt. |
| dare |
When you dare someone, you invite them to do something that is dangerous or not pleasant, or that might get them into trouble. You do this just to see if they are brave enough to do it. [2/3 definitions] |
| daredevil |
a person who puts himself or herself in danger by doing daring or dangerous things. [1/2 definitions] |
| declare |
If the judges declare someone the winner, they announce to everyone their decision that this person is the winner. If the government declares something to be dangerous, they make a statement to everyone that that thing is dangerous. They state their decision about that thing. [1/3 definitions] |
| earthquake |
An earthquake is a dangerous thing that happens. When there is an earthquake, part of the earth's surface shakes. In a strong earthquake, buildings can fall down and streets can break open. |
| endanger |
to put in a dangerous situation. [1/2 definitions] |
| escape |
An escape is the act of getting away from something dangerous. [1/7 definitions] |
| evacuate |
to move or take away from a dangerous place. [1/2 definitions] |
| extreme |
When something is extreme, it is dangerous or risky. It is not gentle or mild. [1/6 definitions] |
| fierce |
wild and dangerous; ferocious. [1/3 definitions] |