-ABLE / -IBLE
-FUL / -LESS
-IC / -IVE
-ORY / -AL
100
Recognise

Recognisable

100

Harm

Harmless

100

Science

Scientific

100

Logic

Logical


200

Sense

Sensible

200

Peace

Peaceful

200

Economy

Economic

200

Prepare

Preparatory

300

Believe

Believable

300

Fear

Fearless

300

Receive

Receptive

300
Environment

Environmental

400

Question

Questionable

400

Breath

Breathless

400

Collaborate

Collaborative

400

Introduce

Introductory


500

Comprehend

Comprehensible

500

Event

Eventful

500

Produce

Productive

500

Contradict

Contradictory