Spanish verb conjugation

demostrar

Stem-changing · o→ue

"to show, to demonstrate, to prove" — stem-changing (o→ue) Spanish verb

Forms you may meet: demuestro, demuestre, demostró, demostrara, demostraré.

Indicative

	Present	Present perfect	Imperfect	Preterite	Future
1sg	demuestro	he demostrado	demostraba	demostré	demostraré
2sg	demuestras	has demostrado	demostrabas	demostraste	demostrarás
3sg	demuestra	ha demostrado	demostraba	demostró	demostrará
1pl	demostramos	hemos demostrado	demostrábamos	demostramos	demostraremos
2pl	demostráis	habéis demostrado	demostrabais	demostrasteis	demostraréis
3pl	demuestran	han demostrado	demostraban	demostraron	demostrarán

Subjunctive

	Present	Imperfect	Future
1sg	demuestre	demostrara / demostrase	demostrare
2sg	demuestres	demostraras / demostrases	demostrares
3sg	demuestre	demostrara / demostrase	demostrare
1pl	demostremos	demostráramos / demostrásemos	demostráremos
2pl	demostréis	demostrarais / demostraseis	demostrareis
3pl	demuestren	demostraran / demostrasen	demostraren

Conditional

	Present
1sg	demostraría
2sg	demostrarías
3sg	demostraría
1pl	demostraríamos
2pl	demostraríais
3pl	demostrarían

Imperative

	Present
2sg	demuestra
3sg	demuestre
1pl	demostremos
2pl	demostrad
3pl	demuestren

Non-finite

Infinitive: demostrar
Gerund: demostrando
Past participle: demostrado

What is Word Holder? A vocabulary tracker with built-in spaced-repetition review. Save stem-changing verbs while reading and the app schedules them for review so the forms actually stick — no flashcards to make.

Save demostrar & remember it — free

Free — no account needed to start.

Spotted a mistake in this conjugation? Report an issue →

Inflection tables and senses from Wiktionary contributors via Kaikki.org, CC BY-SA 4.0, adapted. Sources