| approximately |
about; almost exactly. |
| chronic |
tending to a certain behavior or illness over a long time or without stopping. |
| circulate |
to move or flow along a closed path or system. |
| convertible |
able to be changed. |
| drab |
not bright; dull. |
| humanitarian |
characterized by concern for improving the welfare of people. |
| intensity |
strength or energy of thought or action. |
| involvement |
the state of having a role in or interest in. |
| missionary |
a person who is sent by a church or religious order to a foreign country to teach, convert, heal, or serve. |
| outbreak |
a sudden breaking out or increase in activity of disease. |
| ownership |
the state or fact of being the possessor of something. |
| preside |
to act as the one in charge. |
| segregation |
the practice of separating people according to groups, especially racial groups. |
| substantial |
considerable; ample. |
| systematic |
involving or based on a method or plan; not random or chaotic. |