Of greater size or magnitude than is naturally or normally the case.
Usually of a person: very imposing, renowned, or impressively influential.
Very large; gargantuan.
The political state, especially a domineering and totalitarian one as theorized by Thomas Hobbes.
Something monstrously large or mighty in size, strength, wealth, etc.
A vast sea monster of tremendous strength, described as the most powerful and dangerous creature in the ocean.