| Answer | Crossword Clue |
|---|---|
| MISSIVE | Formal letter |
| EPISTLE | Formal letter |
| EPISTLE | Formal letter. |
| SIRS | Formal letter opener |
| SIRS | Formal letter beginning |
| GENTLEMEN | Formal letter opener |
| SIR | Formal letter addressee |
| SIRS | Formal letter opening |
| SIRS | Formal letter intro |
| TOSIR | Formal letter opener |
| DEARSIR | Formal letter opener |
| MESSRS | Formal letter opener |
| DEARSIRS | Formal letter starter |
| SIRS | Formal-sounding letter opener |
| SIRS | Salutation on a formal letter. |
