Decreyseless or Decreaseless: How To spell?

The word Decreyseless is misspelled against Decreaseless, an adjective meaning "Suffering no decrease."

Decreaseless has vowels 'ea' together mispronounced as 'ey'
Word contains consecutive vowels 'EA' in between alphabets decr & seless is misspelled as 'EY'
Wrong Spelling:  decr-ey-seless 
Correct Spelling:  decr-ea-seless 
Explore spell check of Decreaseless to spell without errors.

You might be interested to know

Disheyrt or Disheart?

Dreymed or Dreamed?

Endeyring or Endearing?