| acceptable |
good enough to be approved of; satisfactory. |
| aircraft |
any machine that can fly through the air, such as an airplane, helicopter, glider, or balloon. |
| ban |
to forbid or have an official rule against; prohibit. |
| flee |
to run away or escape. |
| gratitude |
the feeling of being thankful; gratefulness. |
| imagine |
to form in the mind a thought, picture, or image of. |
| implement |
something used to do a particular job; tool or device. |
| italicize |
to print in italic type. |
| lengthen |
to make or become longer. |
| personality |
all of the qualities of a person that make that person different from others. |
| positive |
certain; sure. |
| unbelievable |
astounding or very hard to believe. |
| unity |
the condition of being united or of acting as one. |
| upper |
higher in place, rank, position, or level. |
| well-known |
famous; familiar. |