niecely

English

From niece +‎ -ly.

niecely (comparative more niecely, superlative most niecely)

Of, pertaining to, or characteristic of a niece.
- 1904, Evelyn Simms, Love and a way:
  He's not forbidden to go for walks alone for fear of his meeting me; he's not forced to listen to a course of daily lectures on the advisability of "niecely" obedience, and the injurious consequences of reading what Aunt Amelia calls melodramatic rubbish.
- 2010, Oliver P. John, Richard W. Robins, Lawrence A Pervin, Ph.D, Handbook of Personality:
  If a person helps his or her brother, sister, or niece to become an ancestor, for example, by sharing resources, offering protection, or helping in times of need, then he or she contributes to the reproductive success of genes “for” brotherly, sisterly, or niecely assistance (assuming that such helping is partly heritable).