кушода

Тирезаи хона кушода буд.
The window of the house was open.
Дар кушода шуд ва мо даромадем.
The door opened and we went in.

Bonus:
осмони кушода: open sky
кушода шудани гул: opening of flowers; blooming

The word кушода can be combined with several helping verbs –
кушода кардан: to open
кушода мондан: to leave open
кушода додан: to reveal

Tajik Proverb
Як дари баста, сад дари кушода.
There is one closed door, but one hundred open doors.