Synonyms of 'vassalage'
Bondage is the condition of being someone's property and having to work for them.
A terrible life of bondage was compounded by a guilty secret.
Servitude is the condition of being a slave or of being completely under the control of someone else.
a life of servitude
Thesaurus for vassalage from the Collins English Thesaurus
the condition of being a vassal or the obligations to which a vassal was liable