How to Say "pseudonym" in Spanish
The Spanish word for “pseudonym” is “alias” — B2 level.
Examples
El criminal usaba el alias de 'El Fantasma' para sus operaciones.
The criminal used the alias 'The Ghost' for his operations.
La policía identificó al sospechoso, cuyo alias es 'El Chino'.
The police identified the suspect, whose alias is 'The Chinese One'.
Muchos artistas de grafiti trabajan bajo un alias para proteger su anonimato.
Many graffiti artists work under an alias to protect their anonymity.
A Word That Doesn't Change
'Alias' is special because it is invariable: it stays exactly the same whether you are talking about one alias ('el alias') or many aliases ('los alias').
Don't Add an 'es'
Mistake: “Los aliases (Incorrect plural form)”
Correction: The correct plural is simply 'los alias'. Remember, the word already ends in 's' and doesn't follow the usual plural rules.
Learn Spanish with Inklingo
Interactive stories, personalized learning, and more.