Avid  

Adjective | av-id
actively interested in or enthusiastic about something

Avenue  

Noun | av-uh-nyoo
an intangible path or approach to something

Authenticity  

Noun | aw-then-tis-i-tee
the quality of being real and true instead of fake and contrived

Austere  

Adjective | aw-steer
extremely plain

Assertion  

Noun | uh-sur-shuhn
a strong declaration

Artificial  

Adjective | ahr-tuh-fish-uhl
something made; not occurring naturally

Articulate  

Verb | ahr-tik-yuh-leyt
to clearly express in words

Apprehension  

Noun | ap-ri-hen-shuhn
fearful expectation of something