Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
100

To travel in a curved path around a planet or star

Orbit

100

A dead body

Cadaver

100

Clothes or other things that you wear so that people will not recognize you

Disguise

100

Acting in a childish way

Immature

100

To leave a ship or airplane

Disembark

200

Not having enough knowledge or information

Ignorant

200

To remove the internal organs

Gut

200

Unwillingly, not eager

Reluctantly

200

To hit someone very hard

Clobber

200

The outer edge of an area of land

Perimeter

300

Slightly burned, or damaged by fire or heat

Scorched

300
In a proud, impressive, or ambitious manner

Grandly

300

To think about something carefully 

Ponder

300

A crash in which two or more things or people hit each other

Collision

300

An ungrateful person

Ingrate

400
In a way that shows you are annoyed by someone's mistakes or because you have to wait

Impatiently

400

To become firm or more difficult to move

Stiffen

400

On trial, experimentally

Tentatively

400

To allow or cause (something very powerful) to happen suddenly

Unleash

400

Very offensive

Obscene

500

Very annoyed and upset

Exasperated

500
In a way that shows you do not think something is worth considering or thinking about serously

Dismissively

500

Causing the entire body to shake

Convulsive

500

To run or move quickly and often playfully

Scamper

500

Producing no result or effort

Futile