1. (a.) Of or pertaining to volume or volumes.

2. (a.) Consisting of many folds, coils, or convolutions.

3. (a.) of great volume, or bulk; large.

4. (a.) Having written much, or produced many volumes; copious; diffuse; as, a voluminous writer.

Gargantuan ample amplitudinous astronomical awesome big billowing boundless broad bulky capacious cavernous colossal commodious comprehensive copious cosmic deep enormous expansive extended extending extensive far-reaching galactic generous gigantic great huge immeasurable immense infinite king-size large legion loose mammoth massive massy monster monstrous monumental mountainous multifarious multitudinal multitudinous numerous outsize overgrown oversized populous prodigious roomy several sizable spacious spreading stupendous substantial sundry titanic tremendous various vast weighty wide widespread