No, spacious is an adjective. Spacious is not an activity.
most spacious
Spacious is an adjective.
the dorm in the hotel was so spacious.
I can give you several sentences.This room is very spacious.Our deck has a spacious view."Oh beautiful, for spacious skies ..." (from "America the Beautiful")The new house is much more spacious than it appears from the outside.
The usual antonym for spacious is confined.
The house was a spacious, at 3500 square feet.
This spacious entry area will be just right for our quartet.
Yes, it is. It means having plenty of space, such as a spacious closet.
Santa's workshop is the most spacious workshop I know of.
The superlative form of "spacious" is "most spacious." This form is used to describe something that has the greatest amount of space compared to others in a group. For example, you might say, "This is the most spacious room in the house."
Spacious is "hiroi" My house is spacious : Watashi no ie wa hiroi desu. Her house is spacious : Kanojyo no ie wa hiroi desu. His house is spacious : Kare no ie wa hiroi desu. If you are not talking about a house, just switch it with the word "ie" "Ie" means house