advertí
/ahd-vehr-TEE/
I warned

I warned (advertí) my friend about the slippery mud ahead.
advertí(verb)
I warned
?giving a caution
,I advised
?giving advice about a danger
I cautioned
?formal warning
📝 In Action
Yo advertí a mi jefe sobre el error antes de que fuera público.
B1I warned my boss about the error before it went public.
Ella me dijo que tuviera cuidado, pero yo no advertí el peligro.
B2She told me to be careful, but I didn't see the danger. (Note: Here, 'no advertí' means 'I didn't notice/realize the danger'.)
El guardia civil me advertí de que no podía aparcar allí.
B1The police officer warned me that I couldn't park there.
💡 Grammar Points
Using 'Advertir' with 'de'
When you warn someone about a specific thing (a noun), you often need to use 'de' (of/about): 'Advertí a María del ladrón' (I warned Maria about the thief).
The Stress of 'Advertí'
'Advertí' is stressed on the last syllable (the 'í'). This is typical for the 'yo' form in the simple past (preterite) tense for -er and -ir verbs.
❌ Common Pitfalls
Forgetting the stem change
Mistake: "Using 'adverto' instead of 'advierto' in the present tense."
Correction: The vowel 'e' changes to 'ie' in most present forms: 'Yo advierto' (I warn).
⭐ Usage Tips
The Sudden Past
The preterite form 'advertí' describes a single, completed action in the past: you gave the warning once and it finished.

I noticed (advertí) the tiny ladybug on my pants.
advertí(verb)
I noticed
?becoming aware of something
,I realized
?sudden understanding
I observed
?seeing something subtle
📝 In Action
Al mirar el cuadro, advertí un detalle minúsculo en la esquina.
B2Upon looking at the painting, I noticed a tiny detail in the corner.
Advertí que la puerta estaba abierta, aunque juraría que la cerré.
B2I realized that the door was open, even though I swore I closed it.
💡 Grammar Points
No need for 'de'
When used to mean 'to notice,' 'advertir' usually acts directly on the thing noticed, or is followed by 'que' (that): 'Advertí el error' or 'Advertí que había un error'.
⭐ Usage Tips
More Formal Awareness
Using 'advertir' for 'to notice' sounds slightly more formal or literary than using the simple verb 'notar' (to note).
🔄 Conjugations
indicative
present
imperfect
preterite
subjunctive
present
imperfect
✏️ Quick Practice
💡 Quick Quiz: advertí
Question 1 of 1
Which sentence correctly uses 'advertí' in the sense of 'giving a caution'?
📚 More Resources
Frequently Asked Questions
Is 'advertí' the same as 'avisé'?
They are very similar! 'Avisar' usually means 'to notify' or 'to let someone know.' 'Advertir' is stronger; it specifically implies a caution or a warning about something negative or dangerous.
Why does the verb 'advertir' change its spelling in the present tense?
'Advertir' is a stem-changing verb. In the present tense, the 'e' in the middle changes to 'ie' (advierto, adviertes), but not for 'nosotros' or 'vosotros' (advertimos, advertís). This is a very common pattern for -ir verbs in Spanish.