/ Dictionary / Index S sisterly: Meaning and Definition of Find definitions for: sis•ter•ly Pronunciation: (sis'tur-lē), [key] — adj. of, like, or befitting a sister: sisterly affection. —adv. in the manner of a sister; as a sister. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sisterly (Thesaurus) sister-in-law Sister of Charity Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language