| crash |
to destroy with great force and loud noise. |
| crawl |
to move along the ground on the hands and knees. |
| crazy |
not reasonable or practical; silly; foolish. |
| each |
every one of two or more things. |
| energy |
the ability to have force or power or to do work. There are many kinds of energy such as physical, electrical, nuclear, or chemical. |
| happen |
to take place; occur. |
| invisible |
not able to be seen. |
| medical |
having to do with the study or practice of medicine. |
| safe |
providing protection from harm, loss, or damage; not dangerous. |
| secret |
not seen or known by others; private. |
| seed |
the small part of a plant with flowers that grows into a new plant. |
| send |
to cause to be carried to another place, especially by mail. |
| sneak |
to move quietly and in a sly way. |
| spice |
a substance from a plant that has a special taste. Spices are used to add flavor to food and drink. |
| track |
a mark or series of marks left on the ground by the feet of people or animals, or the wheels of machines; trail. |