A cliff is an example of a steep acclivity.
accolade
award; honor
When Coolio received an accolade for his acting, he just smiled and asked for a
Kool-Aid.
acne
zits
adroit
skillful
C-3PO is an adroit android.
adulterate
to make impure
Never trust an adult with your belly button lint collection. He will definitely
adulterate it.
adverse
hostile; opposed; unfavorable (see AVERSE)
“It’s tough writing a national anthem during a British attack,” complained
Francis Scott Key. “The only light you have is the rockets’ red glare. You have to
add verses under adverse conditions.”