-ar verb irregular · spelling-change -car Advanced

diagnosticar — Preterite (Pretérito)

to diagnose

The preterite conjugation of diagnosticar (irregular spelling-change -car, ranked #356). Describes completed past actions with a clear start and end. Key signals: ayer, el lunes pasado, de repente.

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Pronoun Preterite conjugation
yo diagnostiqué *
diagnosticaste
él/ella/Ud. diagnosticó
nosotros diagnosticamos
vosotros diagnosticasteis
ellos/ellas/Uds. diagnosticaron

* Red forms deviate from the regular -ar preterite pattern.

Example sentence

Nosotros diagnosticamos juntos.

We diagnose together.

Other tenses of diagnosticar

See full conjugation table for diagnosticar →

Related verbs

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