How to Say "appreciative" in Spanish
The Spanish word for “appreciative” is “agradecido” — A2 level. This is a very common word in everyday Spanish.

Examples
Estoy muy agradecido por su ayuda con la mudanza.
I am very grateful for your help with the move.
Ella se sintió agradecida con todos sus amigos.
She felt thankful toward all of her friends.
Los niños, agradecidos, le dieron un dibujo a la maestra.
The thankful children gave the teacher a drawing.
Adjusting the Ending
Since 'agradecido' is an adjective, its ending must match the person you are describing. Use 'agradecida' for women, 'agradecidos' for groups of men or mixed groups, and 'agradecidas' for groups of women.
Prepositions: Por vs. Con
Use 'por' to say why you are grateful (e.g., por tu regalo - for your gift). Use 'con' to say who you are grateful to (e.g., con mi jefe - to my boss).
Forgetting Gender Agreement
Mistake: “La doctora dijo: 'Estoy agradecido por su ayuda.'”
Correction: La doctora dijo: 'Estoy agradecida por su ayuda.' (The female doctor must use the feminine ending.)
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