broad: very large in expanse or scope; "a broad lawn"; "the wide plains"; "a spacious view"; "spacious skies"
roomy: (of buildings and rooms) having ample space; "a roomy but sparsely furnished apartment"; "a spacious ballroom"
(spaciously) roomily: with ample room; "the furniture was spaciously spread out"
(spaciousness) capaciousness: spatial largeness and extensiveness (especially inside a building); "the capaciousness of Santa's bag astounded the child"; "roominess in this size car is always a compromise"; "his new office lacked the spaciousness that he had become accustomed to"
Having much space; roomy; Large in expanse
(Spaciousness) In concert hall acoustics, a hall is said to be "spacious" if the music performed in it appears to the listener to emanate from a source wider than the visual width of the actual source, and if the listener is noticeably enveloped by the reverberant sound. ...
Conveying a sense of space, ambiance, or room around the instruments. Stereo reverb. Early reflections.
Ideal if you already own a Roomba, or if vacuuming is a hobby you've been meaning to try.
Presenting a broad panorama of ambience, which may be wider than the distance between the loudspeakers.
Usually meaningless. If a property or room is spacious, you can see this on the floorplan, or the estate agent will give measurements. For "deceptively spacious", see this post.
We knocked out a wall and expanded the living room into the garage.