Gargantuan means extraordinarily large or huge.

Does gargantuan mean big?

: very large in size or amount : gigantic. See the full definition for gargantuan in the English Language Learners Dictionary. gargantuan. adjective.

What is the word of huge?

enormous, immense, huge, vast, gigantic, colossal, mammoth mean exceedingly large. enormous and immense both suggest an exceeding of all ordinary bounds in size or amount or degree, but enormous often adds an implication of abnormality or monstrousness.