Italian Phrase
Me lo sono dimenticato a casa.
Meaning
I forgot it at home. The speaker is talking about something masculine (lo) that they unintentionally left behind in their house. The reflexive construction emphasizes that the forgetting was their own action.
When to use
Use this sentence when you realize you have left an item (e.g., keys, phone, book) at home and you want to explain it to someone, typically in informal conversation.
✦Grammar Breakdown
Melosonodimenticatoacasa
Me
Reflexive indirect object pronoun meaning 'to myself' or 'for myself' in this construction.
lo
Direct object pronoun (masculine singular) that replaces the thing forgotten (e.g., 'the key').
sono
Auxiliary verb 'essere' in present indicative, used with reflexive verbs to form the passato prossimo.
dimenticato
Past participle of 'dimenticare'; it agrees in gender and number with the direct object pronoun 'lo'.
a casa
Prepositional phrase meaning 'at home', indicating where the object was left.
🗨In Conversation
Hai il libro che ti ho prestato?
Do you have the book I lent you?
No, me lo sono dimenticato a casa.
No, I forgot it at home.
✕Common Mistakes
Me lo ho dimenticato a casa.
The verb 'dimenticare' uses 'essere' as auxiliary in the reflexive form, not 'avere'.
Me lo sono dimenticata a casa.
The past participle must match the gender of the direct object pronoun 'lo' (masculine), not the speaker.
Lo mi sono dimenticato a casa.
Pronoun order is fixed: indirect object pronoun (me) before direct object pronoun (lo).
↔Alternatives
L'ho dimenticato a casa.
I left it at home.
Me ne sono dimenticato a casa.
I forgot about it at home.
Me lo sono scordato a casa.
I forgot it at home (colloquial).
Cultural Tip
In Italian, the verb 'dimenticare' forms the passato prossimo with 'essere' when used reflexively (mi/ti/si + verbo). The past participle must agree with the direct object pronoun, not with the subject. In northern Italy, many speakers prefer the colloquial 'scordare' instead of 'dimenticare', especially in spoken language.