In short

A reflexive verb is an ordinary verb plus a small pronoun that points back at the subject: mi lavo, ti alzi, si sveglia. The pronoun changes with the person and normally sits before the verb. One rule outranks everything else here: in the passato prossimo a reflexive verb always takes essere, and the participle agrees with the subject - mi sono alzato, Anna si è alzata.

The rule

Italian marks reflexivity with a pronoun, not with a word like English myself. You already know most of these pronouns from step 17 - only the third person is new: si covers himself, herself, itself, themselves.

mi, ti, si, ci, vi, si.

The dictionary lists these verbs with -si stuck to the infinitive: lavarsi, alzarsi, chiamarsi. That -si is not part of the verb - it is a slot you must fill with the pronoun matching your subject. Lavarsi -> io mi lavo, tu ti lavi, noi ci laviamo.

• Step 1 - Take off the -si and you have a normal infinitive: lavarsi -> lavare.
• Step 2 - Conjugate that verb normally for your subject: io lavo.
• Step 3 - Put the matching pronoun in front: io mi lavo. Nothing else changes - reflexive verbs have no special endings.

The pronoun goes before the conjugated verb, and after non: Non mi alzo presto. In questions it stays put: A che ora ti alzi?

Three jobs, one set of pronouns

The same pronouns do three different jobs. Recognising which one is in front of you is most of this lesson.

• True reflexive - the subject does the action to itself. Mi lavo = I wash myself. Here the pronoun is a real object, and you could swap it for someone else: lavo il bambino (I wash the child) -> mi lavo (I wash myself).
• Reciprocal - two or more people do the action to each other. Only the plurals ci, vi, si can do this: si scrivono = they write to each other, ci vediamo = we see each other.
• Inherently pronominal - the pronoun is welded to the verb and means nothing on its own. Arrabbiarsi (to get angry), accorgersi (to notice), pentirsi (to regret), vergognarsi (to be ashamed), innamorarsi (to fall in love), ammalarsi (to fall ill), sedersi (to sit down), sbrigarsi (to hurry). There is no everyday verb arrabbiare to strip the pronoun from - you learn arrabbiarsi whole. Nobody gets angry “to himself”; the pronoun is simply part of the word.

Good news: all three behave identically in grammar. The distinction is about meaning, not about forms.

Reciprocals and their ambiguity

Si guardano can mean they look at themselves or they look at each other. Context usually settles it, and when it doesn’t, add a vicenda, tra loro or l’un l’altro: Si aiutano a vicenda - They help each other.

The passato prossimo - the rule to burn in

Forget the auxiliary rules of step 14 here. A reflexive verb takes essere. Always. No exceptions, no lists.

This surprises learners because the same verb takes avere when it is not reflexive. Compare: Ho lavato la macchina (I washed the car - avere) with Mi sono lavato (I washed - essere). The verb did not change; the pronoun changed the auxiliary.

And because the auxiliary is essere, the participle agrees with the subject in gender and number, exactly as in step 14: Marco si è svegliato, Anna si è svegliata, i ragazzi si sono svegliati, le ragazze si sono svegliate.

When a direct object follows, the participle still agrees with the subject, not with that object: Anna si è lavata le mani.

Body parts and clothes - no possessive

With reflexives Italian uses the definite article where English uses my / your / his. The pronoun has already told you whose they are, so a possessive would be redundant: Mi lavo le mani, Si mette la giacca, Ti sei rotto il braccio?

With a modal

Potere, dovere, volere give the pronoun two homes, and both are fully correct:

• before the modal: Mi devo alzare presto.
• attached to the infinitive (which loses its final -e): Devo alzarmi presto.

Choose one. The pronoun appears once, never twice.

In the passato prossimo the pronoun’s position picks the auxiliary: in front -> essere (Mi sono dovuto alzare); attached -> avere (Ho dovuto alzarmi). Both are standard.

The boundary of this lesson: verbs like farcela, andarsene and cavarsela look reflexive but carry extra frozen particles and idiomatic meanings. They are a later job - see Pronominal verbs.

Forms & patterns

The pronouns, and lavarsi in the present:

The passato prossimo - essere for every person, participle tracking the subject:

The three jobs, side by side:

Same verb, pronoun or no pronoun - a genuine change of meaning:

Examples

Common mistakes

• Mi ho svegliato tardi -> Mi sono svegliato tardi - a reflexive verb takes essere, even when the same verb takes avere without the pronoun. This is the number one error of this lesson.
• Anna si è alzato presto -> Anna si è alzata presto - essere means the participle agrees with the subject. Write the pronoun, then check the last letter against who is speaking.
• Mi devo alzarmi presto -> Mi devo alzare presto (or Devo alzarmi presto) - the pronoun has two possible homes, but it only fills one of them.
• Mi lavo le mie mani -> Mi lavo le mani - mi already says the hands are yours; Italian takes the article, never the possessive.
• Si chiamo Marco -> Mi chiamo Marco - the pronoun follows the subject, not the verb’s dictionary form. Si is only for lui, lei, loro.

Tips

• Reflexive = essere. Full stop. It is one of the few rules in Italian with no exception list. If you see a pronoun from the mi/ti/si/ci/vi/si set attached to the verb, the auxiliary question is already answered.
• The dictionary form lies to you. -arsi never appears in a conjugated sentence. Reading alzarsi, immediately say the io form out loud: mi alzo. That habit stops si chiamo forever.
• Reciprocals need a plural. Ci, vi, si + plural subject can mean each other; mi and ti never can. Ci telefoniamo = we phone each other.
• Your daily routine is a reflexive drill. svegliarsi, alzarsi, lavarsi, vestirsi, prepararsi, addormentarsi - narrate your morning in Italian once and you have practised the whole paradigm.