ANTIQUARY is a 9 letter word that starts with A.

1. \An"ti*qua*ry\, a. [L. antiquarius, fr. antiquus
   ancient. See {Antique}.]
   Pertaining to antiquity. [R.] ``Instructed by the antiquary
   times.'' --Shak.
   
   

2. \An"ti*qua*ry\, n.; pl. {Antiquaries}.
   One devoted to the study of ancient times through their
   relics, as inscriptions, monuments, remains of ancient
   habitations, statues, coins, manuscripts, etc.; one who
   searches for and studies the relics of antiquity.