Adulterate
To contaminate; to make impure
Adverse
Unfavourable, Antagonistic
Averse
Not in favor of
Affable
Easy to talk to, friendly
Affectation
Unnatural or artificial behaviour, usually intended to impress
Affinity
Sympathy, attraction, kinship, similarity
Affluent
Rich, Prosperous
Agenda
Program, things to be done
Agrarian
Relating to Land, Relating to management or farming of land