| Answer | Crossword Clue |
|---|---|
| BRO | Relative of sis. |
| BRO | Relative of sis |
| BRO | Sis' relative |
| BRO | Sis relative |
| BRO | Sibling of sis |
| ISIS | Sis of Osiris |
| BRO | Sibling of Sis |
| BRO | Sib of sis |
| MARY | Sis of Elizabeth I |
| SELMA | Sis of Marge Simpson |
| ALI | SI's Athlete of the Century |
| INLAW | Husband of Sis, for one |
| ORR | SI's 1970 Sportsman of the Year |
| JETER | SI's 2009 Sportsman of the Year |
| RAHS | Two of them might precede a sis-boom-bah |
| NAN | Sis of Bob and Anna in "Mom and Dad Are Palindromes" |
