How to Say "noticed" in Spanish
The most common Spanish word for “noticed” is “fijado” — use 'fijado' reflexively with 'se ha' when you mean 'have you taken note of' or 'have you observed with attention'. It implies a conscious act of noticing..
fijado
fee-HA-doh/fiˈxaðo/

Examples
¿Te has fijado en su nuevo peinado?
Have you noticed her new hairstyle?
Hemos fijado la reunión para el lunes.
We have set the meeting for Monday.
The 'Done' Form
This is the form of the verb used after 'haber' (to have). It stays as 'fijado' regardless of who did the action when used in this way (e.g., 'nosotros hemos fijado').
notado
noh-TAH-doh/noˈtaðo/

Examples
El error fue notado por el profesor.
The error was noticed by the professor.
Su esfuerzo no pasó desapercibido, fue muy notado.
His effort did not go unnoticed, it was very much noticed (or apparent).
Matching the Noun
When used as an adjective, 'notado' must change its ending to match the thing it describes in gender and number: 'el cambio notado' (masc. sing.), 'la diferencia notada' (fem. sing.), 'los errores notados' (masc. plural).
Confusing Roles
Mistake: “Using 'notado' as an adjective without matching the noun (e.g., 'la regla notado').”
Correction: Remember to match the ending to the noun: since 'regla' is feminine, you must say 'la regla notada.'
Fijado vs. Notado
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