Prefixes that mean "not"
Prefixes that mean "opposite"
Prefixes that mean "wrong/bad"
Prefixes that mean "before"
Prefixes that mean "to"
100

Not able

unable

100

not agree

disagree

100

behave badly

misbehave

100

a measure taken in advance to prevent something dangerous, unpleasant, or inconvenient from happening.

precaution

100

make (something) suitable for a new use or purpose; modify.

adapt

200

Not comfortable

uncomfortable

200

A person who lies is 

dishonest

200

unacceptable or improper behavior, especially by an employee or professional person

misconduct

200

a person regarded as an inspired teacher or proclaimer of the will of God. one who foretells future events.

prophet

200

stick to

adhere

300

not legal

illegal
300

make something inactive by disconnecting or destroying it

deactivate

300

a failure to function in a normal or satisfactory manner.

malfunction

300
An introduction, usually in literature or music

prologue

300

to come near

approach

400
not biased or partisan, especially toward any particular political group.


nonpartisan 

400

use up the supply or resources of

deplete

400

evil; ill will

malice

400

a preliminary or preparatory statement; an introduction. We have this in our Constitution

preamble

400

close to, but not exact

approximate

500

A state of disorder due to absence of authority

anarchy

500

move or fall downward.

descend

500

failing or unable to cope with the demands of a normal social environment.


maladjusted

500

This word means before the war

antebellum

500

an enthusiastic devotee of a specified thing or activity

addict

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