obrigatórias

Obrigatórias is the feminine plural form of the Portuguese adjective obrigatório, meaning mandatory or obligatory. It describes feminine plural nouns that are required by law, regulation, policy, or commonly accepted practice.

Etymology and forms: the word derives from the verb obrigar (to oblige) and the noun obrigação (obligation). The adjective has four basic gender-number forms: obrigatório (m.s.), obrigatória (f.s.), obrigatórios (m.p.), obrigatórias (f.p.).

Usage: common in legal, health, education, and administrative contexts in both Brazilian Portuguese and European Portuguese. Examples include "medidas obrigatórias" (mandatory measures), "vacinas obrigatórias" (mandatory vaccines), and "regras obrigatórias" (mandatory rules). In general, the adjective follows the noun, but it can appear before the noun for emphasis in some contexts.

Related terms: obrigação is the noun for obligation, and obrigatoriedade denotes the state or quality of being obligatory. The adverb obrigatoriamente means “necessarily” or “compulsorily.” In some regional varieties, mandatório or mandatória can be used as a synonym, though usage varies and obrigatório remains standard.

See also: obrigatoriedade, obrigação, obrigatoriamente.