unkindredly

From un- +‎ kindredly.

unkindredly (comparative more unkindredly, superlative most unkindredly)

1. Not befitting kindred or family.
   • 1748, [Samuel Richardson], Clarissa. Or, The History of a Young Lady: […], volume VI, London: […] S[amuel] Richardson;  […], →OCLC, page 212:

     What an implacable, as well as unjust, ſet of wretches are thoſe of her unkindredly kin; who have money of hers in their hands, as well as large arrears of her own eſtate; yet withhold both, avowedly to diſtreſs her!