APOSTROPHIZE is a 12 letter word that starts with A.

1. \A*pos"tro*phize\, v. t., [imp. & p. p.
   {Apostrophized}; p. pr. & vb. n. {Apostrophizing}.]
   1. To address by apostrophe.
   2. To contract by omitting a letter or letters; also, to mark
      with an apostrophe (') or apostrophes.
   

2. \A*pos"tro*phize\, v. i.
   To use the rhetorical figure called apostrophe.