Adjektive
spacious [ more spacious ; most spacious ]
vast [ vaster/more vast ; vastest/most vast]
great [ greater ; greatest ]
broad [ broader ; broadest]
immense [ more immense ; most immense ]
roomy [ roomier ; roomiest ]
capacious [ more capacious ; most capacious]
expansive [ more expansive ; most expansive]
vasty [ vastier ; vastiest]