FrenchConjugationImparfait

Savoir (to know) · Imparfait

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Savoir in the French imparfait is: je savais, tu savais, il/elle/on savait, nous savions, vous saviez, ils/elles savaient. The imparfait of savoir keeps the static 'to know' meaning: 'je savais déjà la réponse' = 'I already knew the answer'. Regular from 'savons''sav-'.

savoir conjugation in the Imparfait
To KnowSavoir
I used to know
je savais
you used to know
tu savais
he/she used to know
il/elle/on savait
we used to know
nous savions
you used to know
vous saviez
they used to know
ils/elles savaient
Examples

Savoir (to know) in context

Sentences that use savoir in the imparfait. Tap each to hear it.

Je savais déjà la réponse.

I already knew the answer.

Tu savais nager dès tes cinq ans.

You knew how to swim at five.

Il savait beaucoup de choses sur l'histoire.

He knew many things about history.

Nous savions que c'était une erreur.

We knew it was a mistake.

Vous saviez quoi faire dans cette situation.

You knew what to do in that situation.

Ils savaient que je viendrais.

They knew I would come.

Tip

Working with the imparfait

The imparfait paints the background of a past scene: weather, age, habits, descriptions, ongoing actions that get interrupted. "Il faisait nuit" (it was nighttime), "j'avais cinq ans" (I was five years old), "je marchais quand tu m'as appelé" (I was walking when you called me). The imparfait is almost completely regular — the stem comes from the nous form of the present (nous parlons → je parlais), with only être being truly irregular (j'étais). The contrast with passé composé is the single most important past-tense distinction in French: imparfait = background or habitual; passé composé = completed event.

Questions

Frequently asked questions

How do you conjugate savoir in the imparfait?
Savoir is regular in the imparfait: je savais, tu savais, il/elle/on savait, nous savions, vous saviez, ils/elles savaient. Stem 'sav-' from the nous form 'savons'.
When do I use 'je savais' instead of 'j'ai su'?
Use 'je savais' for ongoing past knowledge — what you already knew during some past stretch of time: 'en 2020, je savais déjà' (in 2020, I already knew). Use 'j'ai su' for the moment of finding out: 'j'ai su la nouvelle en 2020' (I found out the news in 2020). The contrast is static knowledge (imparfait) vs acquisition (passé composé).
Is savoir's imparfait ever irregular?
No — savoir is fully regular in the imparfait. Despite its many other irregularities (sais, sache, saurai), the -ais endings attach cleanly to the stem 'sav-'. Only three French verbs have irregular imparfaits: être (j'étais), aller (allais — but the stem 'all-' itself comes from the nous form normally), and avoir (avais — also regular from 'avons'). Actually only ÊTRE is fully irregular here. Savoir conforms.
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