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

Examples
Mi hermano se enteró de la noticia por internet.
My brother found out the news online.
¿Cómo se enteró usted de que habíamos llegado?
How did you (formal) find out that we had arrived?
La empresa se enteró del problema justo a tiempo.
The company learned about the problem just in time.
Reflexive Requirement (Se)
When 'enteró' means 'found out,' it MUST be used with the pronoun 'se' (se enteró). Without 'se,' it means 'informed someone else'.
Preposition 'De'
When saying what was found out, Spanish often requires the little word 'de' (of/about): 'Se enteró de los resultados' (He found out about the results).
Forgetting 'Se'
Mistake: “Mi madre enteró la noticia.”
Correction: Mi madre SE enteró de la noticia. (Mistake means: My mother informed the news, which doesn't make sense.)
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