Mammothly

At the head of the low-slung, mammothly expensive table, Miles Sterner ran his frequently manicured fingers over two days' worth of stubble.

Source: wiktionary

The cardinal-v.-ordinal distinction turns out to be mammothly important in Cantorian set theory, […]

Source: wiktionary

We are finite beings who, from our very beginnings, have been faced – both individually and collectively – with the task of understanding a mammothly complex world.

Source: wiktionary