| abuse |
cruel or harmful treatment. [1/6 definitions] |
| accident |
an event that happens by chance, especially a harmful one. [1/2 definitions] |
| addict |
a person who depends on something, such as a drug, that is usually harmful and cannot be easily given up. [1/3 definitions] |
| bacterium |
singular form of "bacteria." Bacteria are tiny living things made up of one cell each. Bacteria live in most living things and in all parts of the earth. Most bacteria are useful to people, but some are harmful because they can cause disease. |
| bad |
not healthy; harmful. [1/10 definitions] |
| cyst |
a small pouch within body tissue that is filled with fluid or air. Some cysts are connected with serious disease, but most are not harmful at all. |
| danger |
a chance or likelihood that something bad or harmful may happen; peril; risk. [1/2 definitions] |
| disagree |
to have a harmful effect (usually followed by "with"). [1/3 definitions] |
| heroin |
a drug made from a substance found in certain plants. Heroin is addictive and harmful. It is against the law to make, use, or possess heroin in the United States. |
| ill |
evil; harmful; bad. [1/6 definitions] |
| impure |
mixed with something that is harmful; polluted or not pure. |
| ladybug |
a small, round beetle that is red or orange with black spots. Ladybugs eat aphids and other insects that are harmful to plants. |
| malign |
to speak badly of or tell harmful lies about. |
| mischievous |
tending to behave in an annoying or mildly harmful way. [1/2 definitions] |
| outrageous |
extremely wrong or harmful. [1/2 definitions] |
| ozone layer |
an atmospheric layer between ten and twenty miles above the earth that contains a large amount of ozone, which absorbs certain types of harmful radiation from space. |
| pasteurize |
to heat for a certain length of time. Food and drinks are pasteurized in order to kill most of the harmful bacteria. |
| pest |
an insect or animal that causes damage to crops or is harmful in other ways. [1/2 definitions] |
| plague |
a deadly disease, sudden invasion of harmful insects, or any terrible thing that harms many people. [1/4 definitions] |
| pollute |
to make dirty or harmful to health by mixing in or adding waste material. |
| septic |
infected with harmful bacteria. [1/2 definitions] |