| authorize |
to give official permission to; allow or approve. |
| avalanche |
the sudden rush of a large amount of snow, ice, or rocks down a mountain. |
| breakthrough |
an important discovery in a particular field that encourages an acceleration in knowledge or expertise. |
| caption |
the words that describe a picture or graph in a magazine, book, or newspaper. |
| compulsory |
required or necessary. |
| consent |
to give permission or approval; agree (often followed by "to"). |
| dauntless |
incapable of being discouraged or frightened off; fearless. |
| folly |
a lack of good sense or judgment. |
| historian |
one who writes about or is an expert on history. |
| immune |
protected from a disease, either naturally or by getting a vaccine. |
| offend |
to cause to be angry, annoyed, or insulted. |
| prophesy |
to foretell or reveal, especially under divine inspiration. |
| sincerity |
a thorough and genuine honesty; candor; earnestness. |
| torrent |
a heavy flow of water with a strong current, such as a rushing stream, a flood, or a heavy rainfall. |
| virtual |
not actually being true or real, but seeming to be, or having the same result as if true or real. |