Solutions A brother or sister has 29 entries with similar clues
- nunsister in faith?
- auntMom's sister
- cainAbel's brother
- abelcain's brother
- auntsDads' sisters
- uncleMom's brother
- grimmThe Brothers ....
- nephewA brother's son
- sororalLike sister
- grouchoMarx brothers
- siblingsYour brothers and sisters
- menelausBrother of Agamemnon
- sororitySisterhood
- duck-soupMarx brothers film
- fraternalBrotherly
- freemasonsecretive brother; forenames anag.
- fratricideMurder of a brother
- fraternityBrotherly spirit
- staff-nurseNHS sister's junior
- camaraderieBrotherly spirit
- bloody-towerInfamous lockup for Edward V and his brother
- summerbreezesong that was a hit for the isley brothers in 1974
- cain-and-abelBiblical brothers
- companionshipBrotherly spirit
- trappist-monkSilent brother
- relativepronoun… maybe dad in favour of sister taking over that?
- brothers-in-lawthese married sisters
- spirit-de-corpsBrotherly spirit
- a-night-at-the-operaMarx brothers film