Front

having a lot of energy and doing something for a long time without stopping

Back

tirelessly

Front

when you watch or listen carefully to something or someone to learn information.

Back

observation

Front

to see something quickly

Back

glimpse

Front

to move quickly down through the air

Back

swoop

Front

to agree with something because you think it is good or right

Back

approve

Front

]To move in a steady flow

Back

stream

Front

An area of moving water smaller than a river

Back

stream

Front

to become so full that something flows or pours out over the top or edges of what is holding it

Back

overflow

Front

the filling of something with air or a gas, making it grow larger

Back

inflation

Front

to hide something by covering it up, making it harder to see, or changing how it looks

Back

camouflage