gigantean

adjective

of, relating to, or resembling a giant; enormous in size or scale

Usage: literary or formal; less common than 'gigantic' or 'giant'

Examples

The gigantean statue dominated the city square.
She had a gigantean appetite for knowledge.
The company undertook a gigantean expansion project.
The storm brought gigantean waves to the coast.
His gigantean efforts finally paid off after years of work.