Vassalage

Noun

 * 1) The state of being a vassal.

Adjectives for Vassalage
commercial; hereditary; economic; complete ; effectual.

Thesaurus
absolutism, bond service, bondage, captivity, control, debt slavery, deprivation of freedom, disenfranchisement, disfranchisement, domination, enslavement, enthrallment, feudalism, feudality, helotism, helotry, indentureship, peonage, restraint, serfdom, serfhood, servility, servitude, slavery, subjection, subjugation, thrall, thralldom, tyranny, villenage

Etymology
From vassalage (French vasselage), from vassal.