Underneth or Underneath: How To spell?

The word Underneth is misspelled against Underneath, an adverb meaning "Beneath; below; in a lower place; under; as, a channel underneath the soil."

Underneath has vowels 'ea' together mispronounced as 'e'
Word contains consecutive vowels 'EA' in between alphabets undern & th is misspelled as 'E'
Wrong Spelling:  undern-e-th 
Correct Spelling:  undern-ea-th 
Explore spell check of Underneath to spell without errors.

You might be interested to know

Unrelity or Unreality?

Velvetlef or Velvetleaf?

Weried or Wearied?