[1] : The Collaborative International Dictionary of English v.0.48

gargantuan \gargan"tuan\ ?; 135, a. from gargantua, an
   allegorical hero of rabelais.
   characteristic of gargantua, a gigantic, wonderful personage;
   enormous; prodigious; inordinate.
   1913 webster

[2] : WordNet (r) 2.0

gargantuan
     adj : of great mass; huge and bulky; "a jumbo jet"; "jumbo shrimp"
           syn: elephantine, giant, jumbo
see also:
elephantine giant jumbo 

[3] : Moby Thesaurus II by Grady Ward, 1.0

51 moby thesaurus words for "gargantuan":
   atlantean, brobdingnagian, cyclopean, herculean, homeric, abysmal,
   amplitudinous, astronomic, astronomical, awesome, boundless, bulky,
   colossal, cosmic, elephantine, enormous, epic, extensive, galactic,
   giant, giantlike, gigantic, heroic, huge, immeasurable, immense,
   infinite, jumbo, king-size, large, mammoth, massive, massy, mighty,
   monster, monstrous, monumental, mountainous, outsize, overgrown,
   prodigious, profound, sizable, spacious, stupendous, titanic,
   towering, tremendous, vast, voluminous, weighty

Gargantuan >> G Words
Gargantuan, definition of term: Gargantuan
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