Synonyms for Servile (same or very similar meaning)
WordNet sense 1 (held in servitude):
slave
WordNet sense 2 (abjectly submissive; characteristic of a slave or servant):
slavish, submissive
WordNet sense 3 (attentive in an ingratiating or servile manner):
obsequious
WordNet sense 4 (attempting to win favor by flattery):
fawning
From the ODE community, based on WordNet
add/edit