| although |
in spite of the fact that; even though. |
| brighten |
to become or cause to be enlivened or more cheerful. |
| choke |
to stop or prevent the breathing of by squeezing or blocking the windpipe. |
| commissioner |
the head of a government department. |
| deserve |
to be worthy of or have a right to. |
| effectiveness |
the quality or condition of working as intended or of having the desired result. |
| expense |
money needed to buy or do something; cost. |
| hitch |
to join or fasten with a rope or straps. |
| judgment |
an opinion formed after carefully studying all of the information. |
| labor |
hard work or effort. |
| manufacturer |
a company that makes things in large quantities, usually in a factory and using machines. |
| physics |
the science that deals with matter and energy, their qualities, and the relationships between them. It includes the study of light, heat, sound, electricity, and force. (The word is used with a singular verb.) |
| pollute |
to make dirty or harmful to health by mixing in or adding waste material. |
| tuft |
a group or clump of long strands that are attached at one end and loose at the other. Yarn, hair, and grass are some strands that can form tufts. |
| whirl |
to turn or spin quickly on a central point. |