How to Say "unsuccessful" in Spanish
The most common Spanish word for “unsuccessful” is “fracasado” — use 'fracasado' when referring to a general outcome or result that failed, especially in business or projects..
fracasado
/fra-ca-sá-do//fɾakaˈsaðo/

Examples
El lanzamiento del producto fue fracasado, perdimos mucho dinero.
The product launch was unsuccessful (failed); we lost a lot of money.
Su intento de convencer al jefe resultó fracasado.
His attempt to convince the boss turned out to be a failure.
La misión se consideró fracasada antes de que terminara.
The mission was considered failed before it even finished.
Agreement is Key
Like many Spanish adjectives, 'fracasado' must match the gender and number of the thing it describes. Use 'fracasada' for feminine things (like 'la misión') or 'fracasados' for plural masculine things.
fallado
fah-YAH-doh/faˈʎaðo/

Examples
Devolvimos el producto fallado a la tienda.
We returned the faulty product to the store.
Fue un intento fallado de reconciliación.
It was a failed attempt at reconciliation.
Ella no quiere usar la impresora fallada.
She doesn't want to use the defective printer.
Agreement is Key
When 'fallado' is used as an adjective (describing a noun), it must change its ending to match the noun it describes: 'fallado' (masc. sing.), 'fallada' (fem. sing.), 'fallados' (masc. plural), 'falladas' (fem. plural).
perdedor
pehr-deh-DOR/peɾðeˈðoɾ/

Examples
El equipo tuvo una racha perdedora de cinco partidos.
The team had a losing streak of five games.
No puedes tener esa actitud perdedora si quieres triunfar.
You can't have that defeatist attitude if you want to succeed.
Adjective Agreement
As an adjective, 'perdedor' must match the noun it describes. For example, 'actitud' (attitude) is feminine, so you must use 'actitud perdedora'.
perdedores
pehr-deh-DOH-rehs/peɾðeˈðoɾes/

Examples
Mostraron unos rostros perdedores después de la votación.
They showed losing faces after the vote.
Esos planes perdedores nos costaron mucho tiempo y dinero.
Those losing/unsuccessful plans cost us a lot of time and money.
Adjective Agreement
Remember that 'perdedores' must agree with the noun it modifies. Since it is masculine plural, it describes masculine plural nouns (e.g., 'equipos perdedores', not 'estrategias perdedores').
Mixing up gender
Mistake: “Las estrategias perdedores.”
Correction: Las estrategias perdedoras. (Strategy is feminine, so the adjective must also be feminine.)
Fracasado vs. Fallado
Related Translations
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