The definition of ethereal is someone or something that is light, airy or heavenly.
The definition of immense is something that is extremely large.
Immeasurably great or large; boundless:
Not yet determined; undecided:
Very great in scope or import:
Roomy; ample; loose; full
Having, showing, or requiring great insight or understanding:
Not measured or sounded with a plumb:
Find another word for unfathomed. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for unfathomed, like: ethereal, immense, infinite, undetermined, unsounded, vast, wide, profound and unplumbed.