nepotistic

In a nepotic manner.

The favoring of relatives or personal friends because of their relationship rather than because of their abilities.

plural of nepotism

Of or relating to a nephew.

prodigal, dissolute, or uproarious behavior

plural of nepotation

Of or pertaining to nepoticide.

(countable, uncountable) The killing of one's own nephew. / (countable) One who kills his or her own nephew.

plural of nepoticide.