Hyperbolically large

• Hugely big, in slang
• Monster trap tiny animal discovered
• Really huge
• Using room that's turned out huge
• Huge, in slang
• Massive

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
adjective EXAMPLES FROM CORPUS ▪ Some of the older ones would get together so that they had ginormous piles of rubbish.

Wiktionary Word definitions in Wiktionary
a. (context informal English) Very large.

Wikipedia Word definitions in Wikipedia