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Spanish · Verb · #433 most common

deducir

to deduce
to deduct

Irregular-ir ending

In the tables below, the stem is shown in black and the ending in purple.

1.

Presente

Habitual actions, general truths, and what's happening now.

yodeduzco
deduces
él/elladeduce
nosotrosdeducimos
vosotrosdeducís
ellos/ellasdeducen

Yo deduzco que ella no vendrá a la fiesta.

I deduce that she will not come to the party.

Nosotros deducimos la respuesta correcta del texto.

We deduce the correct answer from the text.

2.

Pretérito Indefinido

Completed actions at a specific point in the past.

yodeduje
dedujiste
él/elladedujo
nosotrosdedujimos
vosotrosdedujisteis
ellos/ellasdedujeron

Ayer deduje que él estaba mintiendo.

Yesterday I deduced that he was lying.

Ellos dedujeron el motivo de su ausencia.

They deduced the reason for his absence.

3.

Imperfecto

Ongoing or repeated actions in the past, descriptions, and background context.

yodeducía
deducías
él/elladeducía
nosotrosdeducíamos
vosotrosdeducíais
ellos/ellasdeducían

Cuando era niño, deducía cosas de los cuentos.

When I was a child, I used to deduce things from the stories.

Ella siempre deducía lo que iba a pasar.

She always deduced what was going to happen.

4.

Futuro Simple

Future actions, predictions, and speculation about the present.

yodeduciré
deducirás
él/elladeducirá
nosotrosdeduciremos
vosotrosdeduciréis
ellos/ellasdeducirán

Mañana deduciré la solución al problema.

Tomorrow I will deduce the solution to the problem.

Ellos deducirán la verdad en poco tiempo.

They will deduce the truth in a short time.

5.

Condicional

Hypothetical situations, polite requests, and future-in-the-past.

yodeduciría
deducirías
él/elladeduciría
nosotrosdeduciríamos
vosotrosdeduciríais
ellos/ellasdeducirían

Si tuviera más información, deduciría mejor.

If I had more information, I would deduce better.

Nosotros deduciríamos el resultado si tuviéramos los datos.

We would deduce the result if we had the data.

6.

Subjuntivo Presente

Wishes, doubts, emotions, and subordinate clauses expressing uncertainty.

yodeduzca
deduzcas
él/elladeduzca
nosotrosdeduzcamos
vosotrosdeduzcáis
ellos/ellasdeduzcan

Es posible que yo deduzca la respuesta correcta.

It is possible that I deduce the correct answer.

Espero que ellos deduzcan la verdad pronto.

I hope that they deduce the truth soon.

7.

Subjuntivo Imperfecto

Past subjunctive contexts, hypothetical si-clauses, and polite suggestions.

yodedujera
dedujeras
él/elladedujera
nosotrosdedujéramos
vosotrosdedujerais
ellos/ellasdedujeran

Si yo dedujera la verdad, te lo diría.

If I were to deduce the truth, I would tell you.

Si ellos dedujeran lo que pasó, estarían más tranquilos.

If they were to deduce what happened, they would be calmer.

"deducir" in other languages

Related verbs

Common questions
Is "deducir" regular or irregular in Spanish?
"deducir" is an irregular Spanish verb. It does not follow the standard -ir conjugation pattern and must be memorized.
How do you conjugate "deducir" in the present tense?
In the Presente, "deducir" conjugates as: deduces, deduzco, deducen, and more. See the full table above.
What is the past tense of "deducir" in Spanish?
In the Pretérito Indefinido, "deducir" conjugates as: dedujiste, deduje, dedujeron, and more. See the full table above.
How common is "deducir" in Spanish?
"deducir" (to deduce, to deduct) is one of the most commonly used verbs in Spanish.