Qual é o plural de mal-estar?

A forma correta é mal-estares. Só o segundo elemento vai para o plural. "Mals-estares" e "males-estares" não existem.

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O motivo: aqui, mal é advérbio, a mesma classe de "ele dormiu mal". E advérbio é invariável: nunca flexiona no plural.

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Males só aparece quando mal é substantivo, no sentido de doença ou coisa ruim: "os males do século", "males do coração".

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A regra vale para outras compostas com advérbio: um bem-estar, vários bem-estares. O primeiro elemento fica parado.

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Nas palavras compostas com hífen, quem flexiona é o elemento que pode variar. Advérbio, prefixo e preposição ficam sempre iguais.

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Na frase: "Os mal-estares começaram depois do café da manhã." Ou: "Ela relatou mal-estares recorrentes durante a semana."

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E vale lembrar! Mal é o contrário de bem; mau é o contrário de bom. Por isso existe mal-estar, mas não "mau-estar".

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QUER SABER MAIS?

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