spacious   
lalaka
width, roominess, spacious, range [Richardson 1885]
malalaka
wide, roomy, spacious [Richardson 1885]
spacious, roomy; without constraint [Hallanger 1973]
mangabakabaka
wide, spacious. Used of tombs, holes, etc. [Richardson 1885]
midadasika
spacious, extensive [Hallanger 1973]
omby
sufficient, enough, competent, large, spacious, roomy, reaching to, arriving at. It is also used for [Richardson 1885]