ven
spir
meter/metr
ast/astr
min
auto
100

This word means to come together for a meeting.

convene

100

This word means the act of breathing.

Respiration

100

This word means the measure across a circle.

diameter

100

This is the study of the arrangement of the stars. Mercury is in retrograde!

astronomy

100

This is something smaller than the original version. Some might have these on a Dungeons & Dragons table during combat.

miniature

100

This device "moves itself," but we all know it needs a driver.

automobile

200

This word means to come between and help solve a problem.

intervene

200

This word means to breathe into, or to fill with emotion.

inspire

200

This tool measures your steps.

pedometer

200

This is someone who sails the stars, particularly not from Russia.

astronaut

200

This means the least possible amount, such as the amount of work a middle schooler will do sometimes.

minimum

200

This words means the use of machines to do a task instead of a human.

automate

300

This word means something that is about to happen or come soon.

event or eventual

300

This word means to breath out, or to die or spoil

expire

300

This word means a shape is balanced on both sides.

symmetry

300

This is something bad that happened, potentially from "bad star alignment."

disaster

300

This is the smaller part of a group.

minority

300

This is a post-mortem operation, to "see for oneself." They can be pretty gross.

autopsy

400

This word means to come before something else.

prevent

400

This word describes someone full of life and energy.

spirited

400

This device measures your speed, perhaps in a car.

speedometer

400

This symbol is shaped like a star.

asterisk

400
This means infinitesimally small.

minute (my-NEWT)

400

A ruler with absolute, self-given power.

autocrat

500

This word means a mutual feeling of agreement.

consensus

500

This word means to "breath towards," or to desire eagerly. 

aspire

500

This measures your distance traveled. Cars have these to tell you how many miles the engine has gone.

odometer

500

This is a rock that orbits the sun, which were once confused as little stars.

asteroid

500

This is someone who promotes limiting what they own. How many pairs of jeans do you really need?

minimalist

500

Someone who is self-taught.

autodidact