aliados
/ah-lee-AH-dohs/
allies

As a noun, aliados means 'allies,' referring to countries or people in a partnership.
aliados(noun)
allies
?countries or people in partnership
,partners
?general collaboration
confederates
?historical/political grouping
📝 In Action
Los Estados Unidos y el Reino Unido fueron aliados durante la Segunda Guerra Mundial.
B1The United States and the United Kingdom were allies during the Second World War.
Necesitamos encontrar nuevos aliados comerciales para expandir nuestro negocio.
B2We need to find new commercial partners to expand our business.
Mis amigos son mis mejores aliados cuando tengo problemas.
A2My friends are my best allies when I have problems.
💡 Grammar Points
Plurality and Gender
Since 'aliados' ends in '-os,' it is masculine and refers to more than one person or thing. If you are talking about a group of only women, you would use 'aliadas'.
⭐ Usage Tips
Formal vs. Informal
While often used formally (like in political reporting), you can also use 'aliados' informally to describe friends or people who support you strongly.

As an adjective, aliados means 'allied'—joined by a treaty or agreement.
📝 In Action
Las fuerzas aliadas avanzaron rápidamente sobre el territorio enemigo.
B1The allied forces advanced quickly over enemy territory.
El éxito fue resultado de intereses mutuos y aliados.
B2The success was the result of mutual and allied interests.
💡 Grammar Points
Adjective Agreement
As an adjective, 'aliados' must change its ending to match the noun it describes. For instance, you would say 'intereses aliados' (masculine plural) but 'naciones aliadas' (feminine plural).
❌ Common Pitfalls
Forgetting Agreement
Mistake: "La nación fue aliados."
Correction: La nación fue aliada. (The adjective must be feminine singular to match 'nación'.)
⭐ Usage Tips
Past Participle Form
'Aliados' is the form Spanish uses when describing something that has been joined, similar to the past tense ending in English (e.g., 'the joined countries').
✏️ Quick Practice
💡 Quick Quiz: aliados
Question 1 of 1
Which sentence uses 'aliados' as an adjective?
📚 More Resources
Frequently Asked Questions
Since 'aliados' looks like a verb ending, how do I know if it's the noun/adjective or a verb form?
Great question! 'Aliados' is the masculine plural past participle of the verb 'aliar' (to ally). However, it is almost always used as a standalone noun ('the allies') or an adjective ('the allied forces'). You will rarely see it used in compound verb tenses (like 'hemos aliados'); when used verbally, the verb 'aliar' is usually used reflexively (e.g., 'se han aliado'—they have allied themselves).