Common word roots:
Anti - when the meaning is 'against' or 'preventing'. (is generally used before the word)
Antibacterial
Antipathy
Anti - slavery
Anti - social
Ful - to represent "full of" something
Beautiful
Disgraceful
Painful
Youthful
Im - to represent "opposite" of something
Imbalance
Immaterial
Immature
Impurity
Pre - to represent "before" of something
Prearrange
Precaution
Predict
Pre - war
Re - is used to do something "again:
React
Rebuilt
Reform
Repeat
Scribe - means, to write
Describe
Inscribe
Transcribe
Circumscribe
Ular - means, resembling
Circular
Granular
Muscular
Tubular