Hi, I think this link will help you greatly: http://www.wordbyletter.com/words_starting_with.php?q=a&letters=7 It lists a huge amount of words starting with a and having 7 letters. Hope that helps :)
areoles
yelling
KeepingKnelledKeelingKillersKingpinKnowing
That's an unusual question.
Certain
firepitfirefly
uniform
Noodles
egghead
crinkle
zoology
lightly