Slavish, a.
Of or pertaining to slaves; such as becomes or befits a slave; servile; excessively laborious; as, a slavish life; a slavish dependance on the great. -- Slav"ish*ly, adv. -- Slav"ish*ness, n.
Shades of meaning
Fernald lists slavish only as an antonym, under royal.
He lists it without comment; the entries above explain its neighbors.
Synonyms
none given