| cascade |
to fall from one level to the next; flow down like a waterfall. |
| cavity |
a hollow place or hole. |
| composition |
the way the parts of something are put together; order or structure. |
| courteous |
being polite or showing good manners. |
| dainty |
small, pretty, and delicate. |
| delegate |
a person who is chosen to speak or act for others. |
| dilemma |
a situation that requires a choice between two actions, neither of which will be a good solution. |
| epidemic |
an outbreak of disease that spreads rapidly to many people in one area. |
| fluent |
able to speak or write easily and naturally. |
| interrogate |
to question at length and in a thorough way, often for an official purpose. |
| jeer |
to remark in a loud, mocking, abusive manner. |
| migrate |
to move from one region into another. |
| periodic |
happening or appearing at regular times. |
| presumably |
judging by what may reasonably be guessed or predicted. |
| unique |
being the only one of its type; sole; single. |