Spanish Phrase
Usa contraseñas fuertes y únicas.
Meaning
The sentence is a direct recommendation: ‘Use strong and unique passwords.’ It stresses the importance of creating passwords that are both difficult to guess and not reused across different accounts.
When to use
You would say this when giving advice about online security, teaching a class on digital hygiene, or reminding friends and family to protect their personal data.
✦Grammar Breakdown
Usacontraseñasfuertesyúnicas
Imperative (Usa)
‘Usa’ is the informal second‑person singular imperative of the verb ‘usar’, used to give a direct command.
Noun‑adjective agreement
‘contraseñas’ is a feminine plural noun, so the adjectives ‘fuertes’ and ‘únicas’ must also be feminine plural.
Coordinating conjunction (y)
‘y’ links two adjectives that describe the same noun, meaning ‘and’.
🗨In Conversation
¿Cómo puedo proteger mi cuenta de correo?
How can I protect my email account?
Usa contraseñas fuertes y únicas.
Use strong and unique passwords.
✕Common Mistakes
Usa contraseñas fuerte y única.
The adjective must agree in number with ‘contraseñas’; use the plural ‘fuertes’.
Usa contraseñas fuertes y única.
Same agreement issue; the correct plural form is ‘únicas’.
Usa contraseña fuerte y única.
When you refer to multiple passwords, the noun must be plural: ‘contraseñas’.
↔Alternatives
Crea contraseñas robustas y distintas.
Create robust and distinct passwords.
Elige claves seguras y diferentes para cada sitio.
Choose secure and different keys for each site.
Genera contraseñas complejas y no reutilices ninguna.
Generate complex passwords and don’t reuse any.
Cultural Tip
In many Spanish‑speaking countries, companies now require passwords with a mix of letters, numbers and symbols. When you hear ‘contraseña fuerte’, think of the same criteria used in English‑language security policies. Avoid using personal data (like birthdays) because it’s a common mistake across cultures.