Breakdown of Отключённый телефон лежит на столе, и в комнате тихо.
Questions & Answers about Отключённый телефон лежит на столе, и в комнате тихо.
Отключённый is a full (long-form) past passive participle used like an adjective to describe телефон. It comes from the perfective verb отключить (to switch off / disconnect / disable).
So отключённый телефон literally means the switched-off phone.
Because it’s used attributively (directly modifying a noun): отключённый телефон.
The short form is used mainly as part of the predicate:
- Телефон отключён. = The phone is switched off.
But before a noun you normally use the long form: отключённый.
Many full-form passive participles in Russian are written with -нн-. Отключённый follows this common pattern for past passive participles used as adjectives. This spelling is something learners often just memorize as part of participle forms.