Definitions for: Sisterly

[adj] like or characteristic of or befitting a sister; "sisterly kindness"; "sororal concern"

Webster (1913) Definition: Sis"ter*ly, a.
Like a sister; becoming a sister, affectionate; as, sisterly
kindness; sisterly remorse. --Shak.

Synonyms: sisterlike, sororal

Antonyms: brotherlike, brotherly, fraternal