devspor
/DEH/
/POHR/
💡 Quick Rule
De = cause is an internal state (emotion/feeling). Por = cause is an external reason or motive.
Think: 'de' = deep inside (emotion). 'por' = purpose or reason.
- Many common expressions are fixed, like 'cansado de' (tired of) or 'harto de' (fed up with).
- Por is also used for the agent in passive sentences ('fue escrito por...'), which is a different use but often confused.
📊 Comparison Table
| Context | de | por | Why? |
|---|---|---|---|
| Emotional Reaction | Gritó de miedo. | Se disculpó por su error. | De for an involuntary reaction caused by an emotion. Por for the reason behind a deliberate action. |
| External Circumstances | Estaba pálido del susto. | Cerraron la calle por el desfile. | De for a physical state resulting from a feeling. Por for an external event that causes an action. |
| Cause of Death | Murió de viejo. | Murió por la patria. | De for the direct, physical cause (illness, old age). Por for the higher motive or sacrifice. |
✅ When to Use "de" / por
de
'From' or 'of' - used when the cause is an internal emotion or physical state that produces a direct, often involuntary, reaction.
/DEH/
Cause is an emotion
Lloraba de felicidad.
She was crying from happiness.
Cause is a physical state
Estaba temblando de frío.
He was trembling from the cold.
Direct cause of death (illness)
Murió de un infarto.
He died of a heart attack.
With verbs describing a resulting state
Se volvió loco de amor.
He went crazy with love.
por
'Because of' or 'for' - used when the cause is an external reason, motive, or event that prompts an action.
/POHR/
Motive for an action
Lo hice por ti.
I did it for you (because of you).
Reason for an event happening
Cancelaron el vuelo por la niebla.
They canceled the flight because of the fog.
Explaining 'why' something was done
No salimos por el mal tiempo.
We didn't go out because of the bad weather.
Cause as a higher purpose or sacrifice
Luchó por la libertad.
He fought for freedom.
🔄 Contrast Examples
With "de":
Estoy temblando de frío.
I'm shivering from cold.
With "por":
Me puse un abrigo por el frío.
I put on a coat because of the cold.
The Difference: De connects the internal state (cold) directly to the physical reaction (shivering). Por explains the external reason (the cold) for taking an action (putting on a coat).
With "de":
Murió de cáncer.
He died of cancer.
With "por":
Murió por sus ideales.
He died for his ideals.
The Difference: De indicates the direct, medical cause of death. Por indicates the higher motive or the reason for the sacrifice.
With "de":
Saltaba de alegría.
He was jumping with joy.
With "por":
Hicimos una fiesta por su ascenso.
We had a party because of his promotion.
The Difference: De links the emotion (joy) to an immediate physical reaction (jumping). Por gives the external event (the promotion) that is the reason for an organized action (the party).
🎨 Visual Comparison
De shows a reaction from an internal state. Por shows an action because of an external reason.
⚠️ Common Mistakes
No fuimos a la playa de la lluvia.
No fuimos a la playa por la lluvia.
The rain is the external reason for the decision not to go. Use 'por' for 'because of an event'.
Estoy cansado por trabajar tanto.
Estoy cansado de trabajar tanto.
'Cansado de' is a common expression. The tiredness is a state resulting from the action, so 'de' links the state to its cause.
Gracias de tu ayuda.
Gracias por tu ayuda.
When giving a reason for gratitude (an exchange), always use 'por'.
📚 Related Grammar
Want to understand the grammar behind this pair? Explore these lessons for a deep dive:
🏷️ Key Words
✏️ Quick Practice
Quick Quiz: De vs Por (cause)
Question 1 of 3
Which is correct? 'El niño lloraba ___ el dolor.'
🏷️ Tags
Frequently Asked Questions
But doesn't 'por' also mean 'for'? This is confusing!
Yes, and that's the tricky part! 'Por' has many meanings (for, by, through, because of). This lesson focuses only on its use for 'cause' or 'reason'. The key is to compare it to 'de', which is used for causes that are internal feelings or states. If the cause is a motive for an action, think 'por'.
Is there a rule for verbs? Like certain verbs always take 'de'?
Yes, many verbs that express emotional or physical states are frequently followed by 'de' to explain the cause. Think of verbs like 'morir(se) de', 'temblar de', 'llorar de', 'gritar de'. It's helpful to learn these as chunks.