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Spanish verb conjugation

diagnosticarConjugation

diagnosticar means to diagnose.

regular with spelling change-ar9 tenses52 forms
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Complete Conjugation Tables

Reference all tenses and moods

Subjunctive

Imperfect Subjunctive

yodiagnosticara
diagnosticaras
él/ella/usteddiagnosticara
nosotrosdiagnosticáramos
vosotrosdiagnosticarais
ellos/ellas/ustedesdiagnosticaran

The imperfect subjunctive follows the -ra pattern: diagnosticara, diagnosticaras, diagnosticara, etc.

Present Subjunctive

yodiagnostique
diagnostiques
él/ella/usteddiagnostique
nosotrosdiagnostiquemos
vosotrosdiagnostiquéis
ellos/ellas/ustedesdiagnostiquen

Diagnosticar requires a spelling change from 'c' to 'qu' in all forms: diagnostique, diagnostiques, diagnostique, etc.

Imperative

Negative Imperative

no diagnostiques
ustedno diagnostique
nosotrosno diagnostiquemos
vosotrosno diagnostiquéis
ustedesno diagnostiquen

The negative imperative always uses the present subjunctive forms: no diagnostiques, no diagnostique, etc.

Imperative

diagnostica
usteddiagnostique
nosotrosdiagnostiquemos
vosotrosdiagnosticad
ustedesdiagnostiquen

The imperative uses 'diagnostica' (tú) and 'diagnostique' (usted/ustedes).

Indicative

Conditional

yodiagnosticaría
diagnosticarías
él/ella/usteddiagnosticaría
nosotrosdiagnosticaríamos
vosotrosdiagnosticaríais
ellos/ellas/ustedesdiagnosticarían

The conditional is regular: add -ía endings to the infinitive (diagnosticaría, diagnosticarías, etc.).

Preterite

yodiagnostiqué
diagnosticaste
él/ella/usteddiagnosticó
nosotrosdiagnosticamos
vosotrosdiagnosticasteis
ellos/ellas/ustedesdiagnosticaron

Diagnosticar is regular except for the 'yo' form, which changes to diagnostiqué.

Imperfect

yodiagnosticaba
diagnosticabas
él/ella/usteddiagnosticaba
nosotrosdiagnosticábamos
vosotrosdiagnosticabais
ellos/ellas/ustedesdiagnosticaban

The imperfect is regular: diagnosticaba, diagnosticabas, diagnosticaba, diagnosticábamos, diagnosticabais, diagnosticaban.

Present

yodiagnostico
diagnosticas
él/ella/usteddiagnostica
nosotrosdiagnosticamos
vosotrosdiagnosticáis
ellos/ellas/ustedesdiagnostican

The present tense is completely regular: diagnostico, diagnosticas, diagnostica, diagnosticamos, diagnosticáis, diagnostican.

Future

yodiagnosticaré
diagnosticarás
él/ella/usteddiagnosticará
nosotrosdiagnosticaremos
vosotrosdiagnosticaréis
ellos/ellas/ustedesdiagnosticarán

The future tense is regular: add endings to the infinitive (diagnosticaré, diagnosticarás, etc.).

Practice Conjugations

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Frequently Asked Questions

What does diagnosticar mean in Spanish?

diagnosticar means "to diagnose".

Is diagnosticar a regular or irregular verb?

diagnosticar is a regular with spelling change -ar verb in Spanish.

How do you conjugate diagnosticar in the present tense?

The present tense of diagnosticar is: yo diagnostico, tú diagnosticas, él/ella/usted diagnostica, nosotros diagnosticamos, vosotros diagnosticáis, ellos/ellas/ustedes diagnostican.

How do you conjugate diagnosticar in the preterite (past tense)?

The preterite of diagnosticar is: yo diagnostiqué, tú diagnosticaste, él/ella/usted diagnosticó, nosotros diagnosticamos, vosotros diagnosticasteis, ellos/ellas/ustedes diagnosticaron.

Free printable reference

diagnosticar conjugation cheat sheet

diagnosticar conjugation cheat sheet — present, preterite, imperfect, future and conditional forms