Languages › French How to Conjugate the French Verb 'Savoir' ('to Know') The French verb 'savoir' is highly irregular, so you'll have to memorize it Share Flipboard Email Print Coursework. Hero Images / Getty Images French Vocabulary Pronunciation & Conversation Grammar Resources For Teachers By ThoughtCo Updated February 28, 2020 Savoir ("to know") is one of the 10 most common verbs in French. Savoir, like many of the most common French verbs, has an irregular conjugation, so irregular that you just have to memorize the full conjugation because it doesn't fall into a predictable pattern. "Savoir" as an Irregular French "-ir" Verb Savoir does fit one pattern—it is an irregular French -ir verbs. It is conjugated like other quirky, common French -ir verbs, such as asseoir, ouvrir, devoir, falloir, mourir, pleuvoir, pouvoir, recevoir, tenir, valoir, venir, voir and vouloir. There are actually two sets of irregular French -ir verbs that are conjugated similarly: The first group includes dormir, mentir, partir, sentir, servir and sortir and all of their derivatives (such as repartir). These verbs all drop the last letter of the radical in the singular conjugations.The second group includes couvrir, cueillir, découvrir, offrir, ouvrir, souffrir and their derivatives (such as recouvrir). These verbs are all conjugated like regular French -er verbs. Meanings and Uses of "Savoir" Generally, savoir means "to know," much as the verb is used in English. It can mean to know: A factBy heartHow (to do something)Realize In the passé composé, savoir means "to learn" or "to find out." In the conditional, savoir is a very formal equivalent of "to be able to." And savoir is one of a handful of French verbs that can be made into negative with just ne, rather than the full ne... pas negative. "Savoir" vs. "Connaître" Savoir and connaître both mean "to know." But they mean "to know" in very different ways: savoir relates more to things and connaître relates more to people, although there is an overlap with both verbs. Here is a further comparison of their meanings. Savior means: 1. To know how to do something. Savoir is followed by an infinitive: Savez-vous conduire? > Do you know how to drive? Je ne sais pas nager. > I don't know how to swim. 2. To know, plus a subordinate clause: Je sais qu'il l'a fait. > I know he did it.Je sais où il est. > I know where he is. Connaître means: 1. To know a person Je connais Pierrette. > I know Pierrette. 2. To be familiar with a person or thing Je connais bien Toulouse. > I know/am familiar with Toulouse.Je connais cette nouvelle. Je l'ai lue l'année dernière. > I know/am familiar with this short story. I read it last year. Expressions With "Savoir" Some expressions using savoir include: À savoir > that is, namely, i.e.Savoir bien > to know very well, be very aware of / thatSavoir, c'est pouvoir. > Knowledge is power.Savoir écouter > to be a good listenerNe savoir à quel saint se vouer > to not know which way to turnNe savoir où donner de la tête > to not know whether one is coming or goingJe ne sais si je devrais le faire. > I don't know if I should do it.Je ne saurais le faire. > I wouldn't know how to do it. Simple Conjugations of "Savoir" Below are the simple conjugations of the verb; they do not include the compound tenses, which consist of a form of the auxiliary verb with the past participle. Present Future Imperfect Present participle je sais saurai savais sachant tu sais sauras savais il sait saura savait Passé composé nous savons saurons savions Auxiliary verb avoir vous savez saurez saviez Past participle su ils savent sauront savaient Subjunctive Conditional Passé simple Imperfect subjunctive je sache saurais sus susse tu saches saurais sus susses il sache saurait sut sût nous sachions saurions sûmes sussions vous sachiez sauriez sûtes sussiez ils sachent sauraient surent sussent Imperative (tu) sache (nous) sachons (vous) sachez Conjugate the Irregular French Verb Connaître, to Know French Verbs to Know: Savoir and Connaître Does the French Verb 'Savoir' Need the Subjunctive? How to Conjugate the Irregular French Verb "Haïr" All About French Irregular '-ir' Verbs How to Conjugate the Irregular French Verb 'Mourir' ('To Die') How to Conjugate the Irregular French Verb "Croire" Common French Expressions Using Savoir How to Conjugate the Irregular French Verb 'Dormir' How to Conjugate the French Irregular Verb 'Écrire' ('to Write') How to Conjugate the Irregular French Verb 'Cuire' ('to Cook') How to Conjugate the French Verb 'Peindre' ('to Paint') Conjugating the Irregular French Verb 'Conduire' ('to Drive') Conjugate the Irregular French Verb Boire (to Drink) How to Use the Irregular French Verb "Recevoir" How to Conjugate the French Verb 'Promettre'