- abate: to lessen
- acrimonious: bitter/sharp tone
- adept: an expert
- adorn: to decorate with
- advocate: one who argues for a cause
- aesthetic: an artistic sensibility
- affable: easy to speak to
- alienate: to cause to become unfriendly/hostile
- allele: an of several forms of a gene
- alliance: a bond/tie
- alpha: the first, beginning
- altruism: selflessness
- amalgamate: blend/unite
- ambiguous: may have several meanings or answers
- anarchy: a state or society without government or law