Adjunct (n.)
an added part not essential to the whole
Admonish
To warm, to caution, as in scolding
Advocate (v.)
to recommend; to speak in favor or support of
Affiliate (n.)
an associate; a partner
Affliction
anything causing great suffering
Aghast (adj.)
feeling great horror or dismay
Alacrity (n.)
liveliness, willingness, eagerness
Alienate (v.)
To make others unfriendly toward you
Allude (v.)
to hint at, to refer to indirectly
Aloof (adj.)
reserved, distant