partisan:

strongly supporting a party, cause or person without properly considering the matter

partisan:

strongly supporting a party, cause or person without properly considering the matter

(Noun)

Example Sentences:

Ramayana:  The more Dasharatha protested against Kaikeyi’s demand that Rama be exiled, the more Kaikeyi felt that Dasharatha was partisan in protecting and promoting Rama.

Mahabharata:  Although Dhritarashtra was partisan in supporting his own sons, he accused Vidura of being partisan in supporting Pandu’s sons.

Bhagavad-gita:  The Gita’s first verse reveals Dhritarashtra’s partisan mentality —  although both the Kauravas and Pandavas are related to him, he calls only the Kauravas his own people, thereby disowning the Pandavas.