How to Say "unjust person" in Spanish
The Spanish word for “unjust person” is “injusto” — B1 level.
English → SpanishB1
NounB1
male individual

Examples
No quiero ser un injusto, pero debes pagar tu parte.
I don't want to be an unjust person, but you must pay your share.
Lo injusto del sistema es que favorece a los ricos.
The unfair part of the system is that it favors the rich.
Adjective vs. Noun
Mistake: “Using 'injusto' when you mean 'injusticia' (the concept of injustice).”
Correction: If you mean the abstract idea of unfairness, use the noun 'injusticia'. If you mean the specific unfair aspect, use 'lo injusto'.
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