gargantuan

US /ɡɑːrˈɡæn.tʃu.ən/
UK /ɡɑːrˈɡæn.tʃu.ən/
"gargantuan" picture
1.

enormous

:
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The company built a gargantuan new factory.
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He has a gargantuan appetite.
:
colossalmammothmassivemonumentaltitanic