oscurecer
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Conocer means 'to know' (people or places). The yo form adds z before c: conozco. All other present forms are regular (conoces, conoce...). Many -ecer and -ocer verbs follow this (parecer → parezco...
Conjugation
View endings (Guide)Modo
Subjuntivo
Subjunctive
Tiempo
Presente de subjuntivo
Present Subjunctive
Click a tense to switch
Indicativo — Indicative
Subjuntivo — Subjunctive
Imperativo — Imperative
More tenses are rolling out over time. · Full tables for some supported tenses are visible with Pro.
Formas impersonales
These are the non‑finite verb forms used in combinations and constructions.
- Infinitivo — oscurecer
- Infinitivo compuesto — haber oscurecido
- Gerundio — oscureciendo
- Gerundio compuesto — habiendo oscurecido
- Participio — oscurecido
Key forms
yo
oscurezco
tú
oscureces
él/ella
oscurece
Use the present perfect for past actions that have a connection to the present or recent past.
Key forms
yo
he oscurecido
tú
has oscurecido
él/ella
ha oscurecido
Use the preterite to describe completed past actions with a clear beginning or end.
Key forms
yo
oscurecí
tú
oscureciste
él/ella
oscureció
Use the imperfect to describe ongoing, habitual, or background actions in the past.
Key forms
yo
oscurecía
tú
oscurecías
él/ella
oscurecía
Use the pluperfect (pluscuamperfecto) for past actions completed before another past action.
Key forms
yo
había oscurecido
tú
habías oscurecido
él/ella
había oscurecido
Use for past-before-past; mainly literary.
Key forms
yo
hube oscurecido
tú
hubiste oscurecido
él/ella
hubo oscurecido
Use the future to express actions that will happen, predictions, or probability.
Key forms
yo
oscureceré
tú
oscurecerás
él/ella
oscurecerá
Use the conditional for hypothetical situations, polite requests, or future in the past.
Key forms
yo
oscurecería
tú
oscurecerías
él/ella
oscurecería
Use the future perfect for actions that will have been completed by a future time.
Key forms
yo
habré oscurecido
tú
habrás oscurecido
él/ella
habrá oscurecido
Use the conditional perfect for hypothetical past actions or actions that would have been completed.
Key forms
yo
habría oscurecido
tú
habrías oscurecido
él/ella
habría oscurecido
Use the present subjunctive for wishes, doubts, emotions, and after certain conjunctions.
Key forms
yo
oscurezca
tú
oscurezcas
él/ella
oscurezca
Use for past actions with present relevance in subjunctive contexts.
Key forms
yo
haya oscurecido
tú
hayas oscurecido
él/ella
haya oscurecido
Use for hypothetical or reported past (e.g. Si viviera…).
Key forms
yo
oscureciera (oscureciese)
tú
oscurecieras (oscurecieses)
él/ella
oscureciera (oscureciese)
Use for past-before-past in subjunctive contexts.
Key forms
yo
hubiera oscurecido (hubiese oscurecido)
tú
hubieras oscurecido (hubieses oscurecido)
él/ella
hubiera oscurecido (hubiese oscurecido)
Rare; legal/formal style.
Key forms
yo
oscureciere
tú
oscurecieres
él/ella
oscureciere
Rare; future perfect in subjunctive contexts.
Key forms
yo
hubiere oscurecido
tú
hubieres oscurecido
él/ella
hubiere oscurecido
Affirmative imperative only. Negative imperative is available as a separate tense.
Key forms
yo
—
tú
oscurece
él/ella
oscurezca
Negative commands: use No + form (e.g. No hables.).
Key forms
yo
—
tú
oscurezcas
él/ella
oscurezca
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