How to Say "tough cookie" in Spanish
The most common Spanish word for “tough cookie” is “fiera” — use 'fiera' to describe someone who is exceptionally skilled and dominant in a specific activity, often in a competitive or intense way, like a 'beast' at something.
fiera
fyeh-rahˈfjeɾa

Examples
Mi hermana es una fiera en los negocios, siempre consigue lo que quiere.
My sister is a tough cookie in business; she always gets what she wants.
Mi hermano es una fiera con los videojuegos.
My brother is a beast at video games.
Ella es una fiera en el trabajo; siempre termina todo a tiempo.
She is a machine at work; she always finishes everything on time.
¡Eres una fiera, gracias por arreglar el coche!
You're an absolute pro, thanks for fixing the car!
Gender and People
Even when talking about a man, this word stays feminine: 'Él es UNA fiera'. This is common for certain Spanish nicknames.
Don't change the ending
Mistake: “Mi amigo es un fiero.”
Correction: Mi amigo es una fiera. To call someone a 'beast' or 'pro,' the word never changes to 'fiero'.
pistola
pees-TOH-lahpisˈtola

Examples
Deja de quejarte, ¡qué pistola eres!
Stop complaining, you're such a tough cookie!
¡Qué pistola eres! No paras de hablar de lo mismo.
You're such a pain! You won't stop talking about the same thing.
Esa abogada es una pistola, consiguió todo lo que pidió.
That lawyer is a real tough cookie; she got everything she asked for.
Figurative Use
When used figuratively to describe a person, 'pistola' often describes someone who 'shoots' off aggressive words or is relentless, sometimes meaning they are extremely annoying or demanding.
Understanding Context
Mistake: “Using this meaning in formal settings.”
Correction: This is strictly informal and regional. Use 'molesto/a' (annoying) or 'difícil' (difficult) in neutral conversations.
Distinguishing Skill vs. Annoyance
Related Translations
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