mentido
/men-TEE-doh/
lied

The word 'mentido' is the past participle of 'mentir', meaning 'lied' (has lied).
mentido(Past Participle)
lied
?used in perfect tenses, e.g., 'has lied'
📝 In Action
Nunca le he mentido a mi madre sobre mis notas.
A2I have never lied to my mother about my grades.
Si hubieras mentido, ya lo sabríamos.
B1If you had lied, we would already know it.
💡 Grammar Points
The 'Perfect' Helper
The word 'mentido' always pairs with a form of the verb 'haber' (to have) to create an action that happened in the past, like 'he mentido' (I have lied).
❌ Common Pitfalls
Changing the Ending
Mistake: "Using 'mentida' or 'mentidos' when forming a perfect tense (e.g., 'Hemos mentidas')."
Correction: When paired with 'haber', the participle 'mentido' never changes its ending, regardless of who is doing the action. It is always 'Hemos mentido'.
⭐ Usage Tips
Regular Form
Even though the base verb 'mentir' is irregular (it changes its stem to 'miento' in the present), its past participle 'mentido' follows the standard '-ido' pattern, making it easy to remember.

When used as an adjective, 'mentido' means 'false' or untrue, describing a statement or rumor.
📝 In Action
La acusación mentida le causó mucho daño.
B2The false accusation caused him a lot of harm.
No podemos confiar en esas promesas mentidas.
C1We cannot trust those untrue promises.
💡 Grammar Points
Agreement is Key
When 'mentido' acts as an adjective (describing a noun), it must change its ending to match the noun's gender and number: 'una historia mentida' (feminine singular), 'los hechos mentidos' (masculine plural).
⭐ Usage Tips
Literary Use
Using 'mentido' as an adjective often sounds more formal or literary than simply using 'falso' (false) or 'engañoso' (deceptive).
✏️ Quick Practice
💡 Quick Quiz: mentido
Question 1 of 2
Which sentence correctly uses 'mentido' as an adjective?
📚 More Resources
Frequently Asked Questions
Is 'mentido' irregular?
The past participle 'mentido' is actually regular—it follows the standard '-ido' pattern. However, the base verb, *mentir* (to lie), is irregular because its stem changes (e to ie, and e to i) in many tenses.
When does 'mentido' change its ending (mentida, mentidos)?
'Mentido' changes its ending only when it is acting as an adjective, describing a noun (like 'the false promise' or 'la promesa mentida'). When it is used to form a verb tense (like 'he mentido'), it never changes.