1 like or characteristic of a sister:
sisterly love
The fraternal and sisterly tie and all family ties are loosened as a consequence of discontinuance of family life.
Not finding fulfillment in heterosexual love, she filled her life with friendships, many of which were sisterly.
Each new family formed by marriage, then, bears the mark of a woman's first, with the sisterly solidarity between orphans requiring a husband to embrace the second sister.
It may be said that there is only a sisterly or brotherly interest there.
Could the noble lady be bit more sisterly?
Brotherly love and sisterly love disappear.
Minna has a sisterly air that shows her concern for those under her command.
Despite her misgivings with her brother, she has occasionally shown sisterly love towards him.