Inklingo
A small, determined figure is holding an oversized, shiny golden key, standing directly in front of a massive, simple wooden door with a prominent keyhole, symbolizing a required action.

deba

DEH-bah

VerbB1regular (conjugation of deber) er
must?I must / he must / she must / you (formal) must,should?I should / he should / she should / you (formal) should
Also:owe?I owe / he owes / she owes / you (formal) owe (debt)

Quick Reference

infinitivedeber
gerunddebiendo
past Participledebido

📝 In Action

No quiero que él deba trabajar el fin de semana.

B1

I don't want him to have to work this weekend.

Es crucial que yo deba revisar los detalles antes de firmar.

B2

It is crucial that I must review the details before signing.

Dudo que ella le deba una explicación.

B1

I doubt that she owes him an explanation.

Word Connections

Synonyms

Common Collocations

  • que deba cumplirthat must be fulfilled
  • no creo que debaI don't think I should

💡 Grammar Points

Subjunctive Trigger

You use 'deba' when the main part of the sentence expresses doubt, emotion, a wish, or a judgment about the obligation. For instance, after phrases like 'Es importante que...' (It is important that...).

Form Identity

'Deba' is the special form used for 'yo' (I), 'él/ella' (he/she/it), and 'usted' (you formal).

❌ Common Pitfalls

Confusing Subjunctive and Indicative

Mistake: "Using 'No creo que él debe ir' (I don't think he must go)."

Correction: The correct form is 'No creo que él deba ir.' When you express doubt ('No creo que...'), you must use the special verb form ('deba').

⭐ Usage Tips

Use with Impersonal Statements

If you start a sentence with a general opinion about necessity (like 'Es necesario que...'), the verb that follows must be 'deba' (or other subjunctive forms).

🔄 Conjugations

indicative

present

él/ella/usteddebe
yodebo
debes
ellos/ellas/ustedesdeben
nosotrosdebemos
vosotrosdebéis

imperfect

él/ella/usteddebía
yodebía
debías
ellos/ellas/ustedesdebían
nosotrosdebíamos
vosotrosdebíais

preterite

él/ella/usteddebió
yodebí
debiste
ellos/ellas/ustedesdebieron
nosotrosdebimos
vosotrosdebisteis

subjunctive

present

él/ella/usteddeba
yodeba
debas
ellos/ellas/ustedesdeban
nosotrosdebamos
vosotrosdebáis

imperfect

él/ella/usteddebiera / debiese
yodebiera / debiese
debieras / debieses
ellos/ellas/ustedesdebieran / debiesen
nosotrosdebiéramos / debiésemos
vosotrosdebierais / debieseis

✏️ Quick Practice

💡 Quick Quiz: deba

Question 1 of 1

Which sentence correctly uses 'deba' to express doubt?

📚 More Resources

Word Family

deuda(debt) - noun

Frequently Asked Questions

Why does 'deba' sound different from the regular 'debo' (I must)?

'Deba' is a special verb form (called the Subjunctive) used when you talk about wishes, doubts, emotions, or things that might not be real yet. The regular form 'debo' is used for facts or definite statements.

Is 'deba' only used for 'yo'?

No, 'deba' is also the form you use for 'él' (he), 'ella' (she), and 'usted' (you formal). You need to look at the context of the sentence to know who is doing the action.