| Answer | Crossword Clue |
|---|---|
| ENC | Letter's addition: Abbr. |
| PSS | Letter addition letters |
| INCR | Addition: Abbr. |
| ARITH | Addition, etc.: Abbr. |
| SASE | Submission addition: Abbr. |
| AMDT | Constitutional addition: Abbr. |
| PPS | Letter addition: Abbr. |
| SUFF | Word addition: Abbr. |
| SUPP | An addition: Abbr. |
| EXT | Phone number addition (abbr.) |
| APP | Addition to a book: Abbr. |
| INT | Addition to an I.R.A.: Abbr. |
