Su carácter voluble hace difícil predecir sus reacciones.
His fickle character makes it difficult to predict his reactions.
Context: society Es voluble en sus decisiones, cambiando de opinión a menudo.
He is fickle in his decisions, often changing his mind.
Context: daily life La situación económica es muy voluble en este momento.
The economic situation is very fickle at the moment.
Context: economy