Base word

agree  

arrange  

conscious  

expense

happy  

help  

kind  

polite  

react  

success  

understand  

use

Prefix

disagree, disagreement, disagreeable

disarrange

unconscious

inexpensive

unhappy, happiness

unhelpful, unhelpfulness

unkind, unkindness

impolite, impoliteness

unsuccessful

misunderstand

disuse, misuse, reuse, reusable, unusable

Suffix

agreement, agreeable,  arrangement

consciousness  

expensive

happiness

helpful, helpfulness, helpless, helplessness

kindness  

politeness  

reaction,  reactive

succession, successive, successful

understandable

useful, useless, usable, usefulness, uselessness