simple past tense and past participle of furnish
"The old house was completely furnished before we moved in last summer."
In plain English: To furnish means to give someone money for their needs, especially when they are sick or poor.
"The landlord will furnish the apartment with free Wi-Fi and streaming services before you move in."
equipped with whatever is needed
"The newly rented apartment was fully furnished, so we could move in immediately without buying any extra furniture or kitchen appliances."
In plain English: Furnished means that a place has furniture and other items you need to live there comfortably.
"The apartment was fully furnished with comfortable sofas and tables."