Vyro
Daft, foolish, half-witted — the Guaraní insult Paraguayans use in the middle of Spanish sentences.
Related lesson: Paraguayan Spanish: A Survival Guide.
Hear it in context
Nde vyro, ¿cómo se te ocurre hacer eso?
You daft thing — what on earth made you do that?
No digas vyrorei, por favor.
Don't talk rubbish, please.
Me sentí vyro cuando me di cuenta del error.
I felt like an idiot when I noticed the mistake.
What It Actually Means
Vyro is Guaraní for silly, foolish, thick — the adjective for someone who has just done something obviously stupid, and the noun for the person who did it. It is one of the handful of Guaraní words that a monolingual Spanish speaker in Asunción will use twenty times a week without ever thinking of it as a foreign word.
Where It Comes From
Guaraní, unmixed. The y is not a Spanish y: it stands for a high central vowel, the sound Guaraní writes with that letter and Spanish has no use for, somewhere between i and u with the lips unrounded. You will see the word written both vyro and výro — Guaraní marks stress with an accent only when it does not fall on the last syllable, and this one is stressed on the first. The derived vyrorei (“foolishness for nothing”) uses the productive Guaraní ending -rei, “in vain, for no reason”.
How Natives Use It
Overwhelmingly in the vocative, behind nde: nde vyro. It sits at the harder end of the affectionate-insult range — tavy is closer to “silly”, vyro closer to “idiot” — so it lands well among friends and badly among strangers. As a noun, un vyro is a fool; as an abstract, vyrorei is the nonsense he is talking.
Common Pitfall
It is Guaraní, so it does not inflect like a Spanish adjective — there is no vyra for a woman and no vyros for a group, however tempting the pattern. Paraguayans say son vyro nomás and leave the word alone. And gauge the room: aimed at a child or a close friend it is affectionate, aimed at a stranger it is a straightforward insult, and the word itself does not tell you which you have just done.