How to Say "enthusiastic" in Spanish
The most common Spanish word for “enthusiastic” is “entusiasmado” — use this word when describing someone's excitement or keen interest in a particular project, idea, or event..
entusiasmado
/en-too-syas-MA-doh//entusjasˈmaðo/

Examples
Estoy muy entusiasmado con mi nuevo proyecto.
I am very enthusiastic about my new project.
Los estudiantes parecen entusiasmados por la excursión.
The students seem enthusiastic about the field trip.
No puedo evitar sentirme entusiasmado por lo que vendrá.
I can't help but feel thrilled about what's to come.
Using the right 'To Be'
Always use 'estar' when using this word to describe how someone feels right now. Using 'ser' would imply they are an 'excited person' by nature, which sounds a bit strange in Spanish.
Matching the Person
Since this word describes a person, the ending must change. Use 'entusiasmada' for a woman, 'entusiasmados' for a group of men or a mixed group, and 'entusiasmadas' for a group of women.
The 'Soy' vs 'Estoy' Trap
Mistake: “Soy entusiasmado por el viaje.”
Correction: Estoy entusiasmado por el viaje. Use 'estar' because excitement is a temporary feeling, not a permanent personality trait.
Gender Mismatch
Mistake: “Ella está muy entusiasmado.”
Correction: Ella está muy entusiasmada. You must change the 'o' to an 'a' when describing a female.
entusiasta
/en-too-syas-tah//entuˈsjasta/

Examples
Ella es una profesora muy entusiasta.
She is a very enthusiastic teacher.
Recibieron la noticia con un grito entusiasta.
They received the news with an enthusiastic shout.
A pesar de los problemas, él se mantiene entusiasta.
Despite the problems, he stays enthusiastic.
One ending for everyone
This word is a 'rebel' adjective! It ends in -a even when you are describing a man. You never say 'entusiasto'.
Trait vs. State
Use 'ser' with entusiasta when describing someone's personality (he is an enthusiastic person). If you want to say someone is excited right now, it's better to use 'estar entusiasmado'.
The 'O' Trap
Mistake: “El niño es muy entusiasto.”
Correction: El niño es muy entusiasta. The word always ends in 'a' regardless of the person's gender.
apasionado
/ah-pah-syoh-NAH-doh//apasjoˈnaðo/

Examples
Él es un defensor apasionado de los derechos humanos.
He is a passionate defender of human rights.
Tuvieron un encuentro apasionado después de muchos años.
They had a passionate encounter after many years.
Ella es muy apasionada con todo lo que hace.
She is very passionate about everything she does.
Matching Gender and Number
This word must change to match the person it describes. Use 'apasionado' for a man, 'apasionada' for a woman, and 'apasionados/as' for groups.
Using with 'Ser'
Use 'ser' when describing someone's personality (e.g., 'Él es apasionado'). Use 'estar' if you are describing a temporary state or how someone is acting in a specific moment.
Passionate vs. Exciting
Mistake: “Using 'apasionado' to describe a movie or a book.”
Correction: Use 'apasionante' for things that cause passion (like a book) and 'apasionado' for the person who feels it.
Entusiasmado vs. Entusiasta
Related Translations
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