Definition
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serio
La palabra 'serio' se refiere a una persona o situación que es grave, formal o que no admite bromas.
The word 'serio' refers to a person or situation that is grave, formal, or does not allow jokes.
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El profesor tiene una actitud muy seria durante las clases.
The teacher has a very serious attitude during classes.
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Es un asunto serio que debemos discutir con calma.
It's a serious matter that we need to discuss calmly.
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Aunque le gusta reír, sabe cuándo ser serio.
Although he likes to laugh, he knows when to be serious.