locos
/LOH-kohs/
crazy
When used as an adjective, locos means "crazy" or mentally unsound.
locos(Adjective)
crazy
?mentally unsound
,mad
?as in angry or reckless
wild
?describing behavior or energy
,silly
?informal, lighthearted
📝 In Action
Mis hermanos están un poco locos después de estudiar toda la noche.
A2My brothers are a little crazy after studying all night.
Hicimos unos planes muy locos para las vacaciones de verano.
B1We made some very crazy plans for the summer vacation.
💡 Grammar Points
Adjective Agreement
Since 'locos' ends in '-os', it is plural and masculine. You use it to describe two or more masculine things (los chicos locos) or a mixed group (los padres locos).
❌ Common Pitfalls
Confusing Ser and Estar
Mistake: "Usar 'Eran locos' para describir un estado temporal (They were temporarily crazy)."
Correction: Use 'Estaban locos' (They were temporarily acting crazy or upset). Use 'Son locos' (They are generally crazy people).
⭐ Usage Tips
Intensity
You can intensify the feeling using '¡Qué locos!' (How crazy!) or 'están súper locos' (they are super crazy).
Locos can also be used as a noun meaning "crazy people" or a group of unstable individuals.
locos(Noun)
crazy people
?a group of unstable people
,madmen
?people characterized by severe irrationality
idiots
?informal insult
📝 In Action
Los locos del pueblo solían reunirse en la plaza central.
B1The crazy people (madmen) of the town used to gather in the central square.
Solo los locos se atreverían a subir esa montaña sin equipo.
B2Only crazy people would dare climb that mountain without equipment.
💡 Grammar Points
Adjective to Noun
In Spanish, it is very common to turn an adjective into a noun by adding an article (los, las, un, una). When you say 'los locos', you are referring to 'the crazy ones' or 'the crazy people'.
⭐ Usage Tips
Direct Address
In many Latin American countries, 'locos' can be used informally as a term of address among close friends, similar to 'guys' or 'dudes,' but implying a strong bond or shared excitement.
✏️ Quick Practice
💡 Quick Quiz: locos
Question 1 of 2
Which sentence correctly uses 'locos' as an adjective?
📚 More Resources
Frequently Asked Questions
How do I know if 'locos' means 'crazy people' (noun) or just 'crazy' (adjective)?
If 'locos' has an article (like 'los' or 'unos') directly in front of it, it is usually acting as a noun ('Los locos llegaron' - The crazy people arrived). If it comes after a form of 'ser' or 'estar' and describes a subject, it's an adjective ('Ellos son locos' - They are crazy).
Can I use 'locos' if the group includes both men and women?
Yes. If you are describing a mixed-gender group (e.g., brothers and sisters), the masculine plural form ('locos') is always the correct standard choice in Spanish.