How to Say "to complete" in Spanish
The most common Spanish word for “to complete” is “terminar” — use 'terminar' when you are finishing all the parts of something or reaching the end of an activity..
terminar
/ter-mee-NAR//teɾ.miˈnaɾ/

Examples
Tengo que terminar mi tarea.
I have to finish my homework.
¿A qué hora termina la película?
What time does the movie end?
Cuando termines de leer, apaga la luz.
When you finish reading, turn off the light.
Saying you 'finished doing' something
To say you finished an action, use the pattern 'terminar de' followed by the base form of the other verb. For example, 'Terminé de comer' means 'I finished eating'.
Forgetting 'de'
Mistake: “Voy a terminar leer el libro.”
Correction: Voy a terminar de leer el libro. When you follow 'terminar' with another action (verb), you almost always need the little word 'de' in between.
acabar
ah-kah-BAHR/a.kaˈβaɾ/

Examples
Necesito acabar este informe antes de las cinco.
I need to finish this report before five o'clock.
La película acaba con un final inesperado.
The movie ends with an unexpected conclusion.
¿Cuándo acabas de trabajar hoy?
When are you finishing work today?
Simple Usage
Use 'acabar' just like 'finish' in English. If you finished a task, put the task right after the verb: Acabé la cena (I finished dinner).
completar
/kom-ple-TAR//kom.pleˈtaɾ/

Examples
Necesito completar la tarea antes de irme.
I need to complete the homework before I leave.
Ella completó el maratón en menos de cuatro horas.
She finished the marathon in less than four hours.
¿Puedes completar las instrucciones que faltan?
Can you complete the missing instructions?
A Regular Verb
Since 'completar' is a regular '-ar' verb, it follows the most common Spanish conjugation pattern, making it easy to learn.
Using 'Terminar' vs. 'Completar'
Mistake: “Using 'Terminar' when you mean 'to make whole' (e.g., 'Terminar la colección').”
Correction: 'Completar' often implies filling a gap or reaching 100%, while 'terminar' just means stopping or ending something.
llenar
/yeh-NAHR//ʎeˈnaɾ/

Examples
¿Podría llenar este formulario de inscripción, por favor?
Could you fill out this registration form, please?
Debes llenar todos los campos con tu información personal.
You must fill in all the fields with your personal information.
Transitive Verb
Like the literal meaning, 'llenar' always needs an object here: you fill what? (The form, the survey, etc.).
Choosing between 'terminar,' 'acabar,' and 'completar'
Related Translations
Learn Spanish with Inklingo
Interactive stories, personalized learning, and more.



