1 required by regulations or laws; obligatory
2 involving or employing compulsion; compelling; necessary; essential
n purchase of a house or other property by a local authority or government department for public use or to make way for development, regardless of whether or not the owner wishes to sell
English Collins Dictionary - English Definition & Thesaurus
binding, de rigueur, forced, imperative, mandatory, obligatory, required, requisite
discretionary, elective, non-obligatory, non-requisite, optional, unimperative, unnecessary, voluntary
English Collins Dictionary - English synonyms & Thesaurus
Add your entry in the Collaborative Dictionary.