-er verb irregular · spelling-change Advanced

oscurecer — Preterite (Pretérito)

to darken, to get dark

The preterite conjugation of oscurecer (irregular spelling-change, ranked #2302). Describes completed past actions with a clear start and end. Key signals: ayer, el lunes pasado, de repente.

Drill the preterite tense with spaced repetition Practice oscurecer and 965 other verbs in the Conjugado app — free to try.
Practice for free ↗
Pronoun Preterite conjugation
yo oscurecí
oscureciste
él/ella/Ud. oscureció
nosotros oscurecimos
vosotros oscurecisteis
ellos/ellas/Uds. oscurecieron

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

Example sentence

Las nubes oscurecieron el sol.

The clouds darkened the sun.

Other tenses of oscurecer

See full conjugation table for oscurecer →

Related verbs

See all 1,316 verbs in the preterite tense

Browse Preterite tense →