Italian modal verbs (verbi modali or verbi servili) are used to express ability, possibility, desire, and necessity. The three most common are potere (can, to be able to), volere (to want), and dovere (must, to have to). These verbs are especially useful in everyday conversations because they allow you to explain what you can do, what you want to do, and what you need to do. All three are irregular in the present tense, so their forms must be learned individually. However, they follow a simple and consistent pattern when used with another verb.
How Modal Verbs Work and What They Mean
Modal verbs are usually followed by another verb in the infinitive, which is the basic form ending in -are, -ere, or -ire. The modal verb changes according to the subject, while the second verb stays in the infinitive. For example, posso parlare means I can speak, voglio mangiare means I want to eat, and devo studiare means I have to study. In Italian, all three modal verbs are followed directly by the infinitive, without a connecting word. In English, the construction varies: we say can go and must go, but want to go. The Italian pattern is therefore simpler and works in the same way with all three verbs.
Potere expresses what someone can do and is also used to ask for permission, as in posso entrare? (Can I come in?). Volere expresses a wish or desire, as in voglio dormire (I want to sleep). It can also be followed directly by a noun, as in voglio un caffè (I want a coffee). Dovere expresses necessity or obligation, as in devo lavorare (I have to work). In everyday Italian, it is commonly used to talk about things that need to be done. These differences are important because the same infinitive can express three different meanings depending on the modal verb that comes before it.
Posso uscire. — I can go out.
Voglio uscire. — I want to go out.
Devo uscire. — I have to go out.
Summary of Modal Verbs in the Present Tense
| Subject | Potere (can) | Volere (want) | Dovere (must / have to) |
| io | posso | voglio | devo |
| tu | puoi | vuoi | devi |
| lui / lei / Lei | può | vuole | deve |
| noi | possiamo | vogliamo | dobbiamo |
| voi | potete | volete | dovete |
| loro | possono | vogliono | devono |