A friendly, silhouetted figure standing in a doorway, representing an unknown person.

alguien

/al-gyen/

PronounA1
someone?general use,somebody?general use
Also:anyone?in questions or affirmative sentences,anybody?in questions or affirmative sentences

📝 In Action

¿Hay alguien en casa?

A1

Is anyone home?

Alguien llamó por teléfono.

A1

Someone called on the phone.

Necesito hablar con alguien que sepa de computadoras.

A2

I need to talk to someone who knows about computers.

Si alguien tiene una pregunta, que levante la mano.

B1

If anyone has a question, raise your hand.

Related Words

Synonyms

  • una persona (a person)

Antonyms

  • nadie (no one / nobody)

Common Collocations

  • alguien mássomeone else
  • alguien importantesomeone important

Idioms & Expressions

  • ser alguiento be a person of importance or influence

💡 Grammar Points

The Opposite of 'Nadie'

'Alguien' means 'someone.' Its direct opposite is 'nadie,' which means 'no one' or 'nobody'.

Always Singular, Always the Same

'Alguien' always refers to one person and never changes its spelling for plurals or gender.

Using the 'Personal a'

When 'alguien' is the one receiving an action from a verb, you usually need to put 'a' in front of it. For example, 'Vi a alguien' (I saw someone).

❌ Common Pitfalls

Using in Negative Sentences

Mistake: "No vi a alguien."

Correction: For negative sentences, you must switch to its opposite: 'No vi a nadie' (I didn't see anyone).

Trying to Change its Gender

Mistake: "Busco a alguiena inteligente."

Correction: The word 'alguien' never changes. It works for any person. Say: 'Busco a alguien inteligente'.

⭐ Usage Tips

Perfect for Questions

'Alguien' is great for asking if an unknown person is present or did something. For example, '¿Alguien quiere postre?' (Does anyone want dessert?).

✏️ Quick Practice

💡 Quick Quiz: alguien

Question 1 of 2

Which sentence correctly says 'I didn't hear anyone'?

📚 More Resources

Word Family

algo(something) - pronoun

Frequently Asked Questions

What's the difference between 'alguien' and 'alguno'?

'Alguien' always means 'someone' and only refers to people. 'Alguno' means 'some' or 'any' and can refer to a person or a thing from a specific group. For example, '¿Vino alguno de tus amigos?' (Did any of your friends come?).

Can I say 'alguienes' to mean 'some people'?

No, 'alguien' is always singular. If you want to talk about multiple, unspecified people, you would use 'algunos', 'algunas', or 'algunas personas' (some people).