Circum
Mal
Post
Equi
Ante
100

Sail around the Earth.

Circumnavigate

100

a person has bad will or evil intentions.

Malevolent

100

Award given after recipient has died.

Posthumous

100

Triangle has three equal sides.

Equilateral

100

The period before the war

Antebellum

200

Cautious and looking around.

Circumspect

200

When you feel bad

Malady

200

PS we put at the bottom of a letter after we have written it.

postscript

200

Equally take both sides of an issue.

Equivocate

200

Noun that comes before the pronoun 

Antecedent

300

Get  around them.

Circumvent

300

Intentionally bad.

Malicious

300

Descendents who come after me.

posterity

300

System in balance.

Equilibrium 

300

Front part of something

Anterior

400

The distance around a circle.

Circumference

400

To function badly or incorrectly.

Malfunction

400

To delay an event until a later time

Postpone

400

The state of being equal in status, rights, and opportunities.

Equality

400

A waiting room

Anteroom

M
e
n
u