1) Counterpart of fraternal 2) For the sisters 3) Like sisters 4) Like the Olsen twins 5) Related to Greeks, sometimes 6) Sisterlike 7) Sisterly Found on https://www.crosswordclues.com/clue/sororal
So·ro'ral adjective [ Latin soror sister: confer French sororal .] Relating to a sister; sisterly. [ R.] Found on http://www.encyclo.co.uk/webster/S/147