subservient

Concise Oxford English Dictionary © 2008 Oxford University Press:
subservient/səbˈsɜːviənt/

▶adjective (often subservient to)

• 1 prepared to obey others unquestioningly; obsequious.

• 2 less important; subordinate.

– derivatives
subservience noun,
subserviency noun,
subserviently adverb.