1. (n.) Extending far and wide; vast in extent.
2. (n.) Inclosing an extended space; having large or ample room; not contracted or narrow; capacious; roomy; as, spacious bounds; a spacious church; a spacious hall.
Thesaurus Entries
Gargantuan, ample, amplitudinous, astronomical, awesome, big, boundless, broad, bulky, capacious, colossal, commodious, comprehensive, copious, cosmic, deep, enormous, expansive, extended, extending, extensive, far-reaching, full, galactic, generous, gigantic, great, huge, immeasurable, immense, infinite, king-size, large, mammoth, massive, massy, monster, monstrous, monumental, mountainous, outsize, outsized, overgrown, oversized, prodigious, roomy, sizable, sizeable, spreading, stupendous, titanic, tremendous, vast, voluminous, weighty, wide, widespread
