ALPHA
BRAVO
CHARLIE
DELTA
ECHO
100

to make something known

reveal

100

to move quickly; informal usage

zoom

100

the inside surface at the top of a room

ceiling

100

ten years

decade

100

something that is difficult to understand or explain; something unknown

mystery

200

to express regret for doing or saying something wrong

apologize

200

to suddenly cry out in a loud and high voice because of pain or surprise

scream

200

the process of building something such as a house or a road

construction

200

to fear something that will or might happen

dread

200

something sent out or given off; typically harmful substances released into the air by automobiles

emission

300

to understand or become aware of something

realize

300

a person or group that has something that belongs to them

owner

300

to officially decide (something) especially because of evidence or facts

determine

300

to cause someone or something to be in a dangerous place or situation

endanger

400

an agreement in which a person makes regular payments to a company and the company promises to pay money if the person is injured or dies, or to pay money equal to the value of something (such as a house or car) if it is damaged, lost, or stolen

insurance

400

to create or produce something useful for the first time

invent

400

a wet substance that hardens when it becomes dry and that is used to make smooth walls and ceilings

plaster

400

a person who does dangerous things especially in order to get attention

daredevil

400

the act or process of telling a story or describing what happens

narration

500

involving methods that do not completely use up or destroy natural resources

sustainable

500

a deck [or bridge] that is hung from two or more cables that are held up by towers

suspension

500

to decide how a dancer or group of dancers will move during a performance; often used figuratively (for example, arranging details of a meeting or of a banquet)

choreograph

500

impossible to fight against something especially because of strength or attractiveness

irresistible

500

relating to or characteristic of soldiers or armed forces

military

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