| conceal |
to hide or keep hidden from sight. |
| defect |
a weakness, flaw, or bad quality. |
| deteriorate |
to become less in value or quality; decline. |
| duration |
the length of time during which something goes on. |
| entrepreneur |
someone who assumes the financial risk of beginning and operating one or several businesses. |
| generosity |
the condition of being willing and ready to give. |
| harmonic |
in music, related to chords, or different notes played simultaneously. |
| hinder |
to hold back or stop the progress of. |
| monopoly |
complete control over a service or product within a given area. |
| noticeable |
easily noticed. |
| passport |
an official document that shows that the holder is a citizen of a country. A passport gives one the right to travel in other countries and return to one's own country. |
| patent |
a government grant that gives someone the right to make, use, or sell an invention. A patent is given for a certain number of years. |
| recuperate |
to become healthy again after being ill. |
| restrain |
to hold back or control. |
| simplicity |
the condition or quality of being easy to understand or do. |