prometervscomprometerse
/proh-meh-TEHR/
/kohm-proh-meh-TEHR-seh/
💡 Quick Rule
Prometer = to promise an action. Comprometerse = to commit to a responsibility.
Think: A 'Promesa' is a promise. A 'Compromiso' is a commitment.
- The non-reflexive 'comprometer' means 'to compromise' or 'to jeopardize', which is a completely different meaning.
- 'Prometer' can sometimes be used for things that show potential, like 'El día promete' (The day looks promising).
📊 Comparison Table
| Context | prometer | comprometerse | Why? |
|---|---|---|---|
| Personal Goal | Prometo que voy a ir al gimnasio. | Me comprometo a ir al gimnasio. | Prometer is saying the words. Comprometerse is about making a firm decision and taking on the responsibility yourself. |
| Relationships | Le prometió amor eterno. | Se comprometieron el mes pasado. | Prometer is a verbal assurance of love. Comprometerse is the formal act of getting engaged. |
| Work | Prometo terminar el informe hoy. | Estoy comprometido con el éxito de la empresa. | Prometer is for a specific, one-time task. Comprometerse (or estar comprometido) is about a long-term dedication. |
✅ When to Use "prometer" / comprometerse
prometer
To promise; to give your word that you will do (or not do) something.
/proh-meh-TEHR/
Making a verbal promise
Te prometo que te llamaré mañana.
I promise I will call you tomorrow.
Promising a thing
Mis padres me prometieron un viaje si aprobaba todo.
My parents promised me a trip if I passed everything.
To show potential
Este nuevo jugador promete mucho.
This new player shows a lot of promise.
comprometerse
To commit oneself; to take on a responsibility or obligation. It's about personal dedication.
/kohm-proh-meh-TEHR-seh/
Making a serious commitment
Me comprometo a ayudar con el proyecto.
I commit to helping with the project.
Getting engaged to be married
Laura y Miguel se comprometieron en París.
Laura and Miguel got engaged in Paris.
Getting involved with a cause
La organización se compromete a proteger el medio ambiente.
The organization is committed to protecting the environment.
🔄 Contrast Examples
With "prometer":
Le prometí a mi mamá que haría la tarea.
I promised my mom I would do the homework.
With "comprometerse":
Me comprometí a entregar todas mis tareas a tiempo este semestre.
I committed to turning in all my homework on time this semester.
The Difference: 'Prometer' often involves making a promise to someone else for a single action. 'Comprometerse' is more like making a resolution or taking on a long-term responsibility for yourself.
With "prometer":
El líder del equipo prometió que todo saldría bien.
The team leader promised that everything would turn out fine.
With "comprometerse":
El líder del equipo se comprometió a escuchar todas las ideas.
The team leader committed to listening to all ideas.
The Difference: The promise is a general assurance about the outcome. The commitment is a specific, actionable responsibility the leader is taking on.
🎨 Visual Comparison
Prometer is making a promise. Comprometerse is making a commitment.
⚠️ Common Mistakes
Prometo a estudiar más.
Prometo estudiar más.
After 'prometer', the next verb goes directly in its infinitive form (like 'estudiar'). You don't need the preposition 'a'. 'Comprometerse', however, does need it: 'Me comprometo a estudiar'.
Te comprometo que lo haré.
Te prometo que lo haré.
When you're making a simple promise to someone, use 'prometer'. 'Comprometerse' isn't used to make a promise *to* someone in this way; it's about your own commitment.
📚 Related Grammar
Want to understand the grammar behind this pair? Explore these lessons for a deep dive:
🏷️ Key Words
✏️ Quick Practice
Quick Quiz: Prometer vs Comprometerse
Question 1 of 3
Which verb is used for getting engaged?
🏷️ Tags
Frequently Asked Questions
Can I use 'estar comprometido' instead of 'comprometerse'?
Yes, they are very similar. 'Me comprometo' is the action of making the commitment. 'Estoy comprometido' is the state of being committed. For example, 'Me comprometo a ayudar' (I commit to help) vs. 'Estoy comprometido con la causa' (I am committed to the cause).
What does 'comprometer' mean without the reflexive '-se'?
It has a totally different meaning! 'Comprometer' on its own means to jeopardize, endanger, or compromise. For example, 'No quiero comprometer nuestra seguridad' means 'I don't want to jeopardize our safety'.