How to Say "propensity" in Spanish
The most common Spanish word for “propensity” is “tendencia” — use 'tendencia' for a natural, often habitual, inclination to behave in a certain way or for a general trend..
tendencia
/ten-den-syah//tenˈdensja/

Examples
Él tiene una tendencia a exagerar las cosas.
He has a tendency to exaggerate things.
Es un periódico con una clara tendencia política.
It is a newspaper with a clear political leaning.
Ella tiene una tendencia natural hacia el arte.
She has a natural inclination toward art.
The 'To' Connection
When you want to say a 'tendency to' do something, always use the letter 'a' after 'tendencia'.
Wrong Connector
Mistake: “Tiene tendencia de comer mucho.”
Correction: Tiene tendencia a comer mucho. (Always use 'a' when connecting the tendency to an action.)
inclinación
Examples
Tiene una clara inclinación hacia la música clásica.
She has a clear leaning toward classical music.
Tendencia vs. Inclinación
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