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