How to Say "to demonstrate" in Spanish
The most common Spanish word for “to demonstrate” is “demostrar” — use 'demostrar' when you need to prove a theory, an idea, or a fact, often in a more formal or logical context..
demostrar
deh-mohs-TRAR/demoˈstɾaɾ/

Examples
El estudio demostró que el ejercicio regular mejora la salud.
The study demonstrated that regular exercise improves health.
El abogado pudo demostrar la inocencia de su cliente.
The lawyer was able to prove his client's innocence.
Necesitas demostrar que tienes suficiente experiencia para el puesto.
You need to demonstrate that you have enough experience for the position.
La ciencia ha demostrado que el ejercicio es bueno para la salud.
Science has proven that exercise is good for your health.
Stem-Changing Verb (O > UE)
In the present tense, the 'o' changes to 'ue' in all forms except for 'nosotros' (we) and 'vosotros' (you plural/Spain). This is a very common pattern in Spanish verbs.
Forgetting the Stem Change
Mistake: “Yo demostro (No stem change)”
Correction: Yo demuestro (Remember the 'ue' change in the present tense.)
mostrar
mo-STRAR/mosˈtɾaɾ/

Examples
El gráfico muestra el aumento de las ventas.
The graph shows the increase in sales.
Los datos muestran que la economía está mejorando.
The data demonstrates that the economy is improving.
Debemos mostrar respeto por las reglas.
We must show respect for the rules.
El informe mostró resultados inesperados.
The report proved/showed unexpected results.
Demostrar vs. Mostrar
Related Translations
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