Favoritism, n.
Etymology: [Cf. F. favoritisme.]
The disposition to favor and promote the interest of one person or family, or of one class of men, to the neglect of others having equal claims; partiality. A spirit of favoritism to the Bank of the United States. A. Hamilton.
Shades of meaning
Fernald lists favoritism only as an antonym, under justice.
He lists it without comment; the entries above explain its neighbors.
Synonyms
none given