"Vastitude" is a word in ENGLISH

Immeasurable; unlimited. In commonest use: Very great; vast; huge.

The state or quality of being immense; inlimited or immeasurable extension; infinity; vastness in extent or bulk; greatness.

Indefinitely large or extensive; great; vast; immense; gigantic; prodigious.

An immense expanse; any vast space or quantity without apparent limits; as, the boundless ocean of eternity; an ocean of …

Extraordinary in bulk, extent, quantity, or degree; very great; vast; huge; immense; as, a prodigious mountain; a prodigious creature; a …

A waste region; boundless space; immensity.

Of great extent; very spacious or large; also, huge in bulk; immense; enormous; as, the vast ocean; vast mountains; the …

Vastness; immensity.

To a vast extent or degree; very greatly; immensely.

Vast; immense.