Incrasement or Increasement: How To spell?

The word Incrasement is misspelled against Increasement, a noun meaning "Increase."

Increasement has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets incr & sement is misspelled as 'A'
Wrong Spelling:  incr-a-sement 
Correct Spelling:  incr-ea-sement 
Explore spell check of Increasement to spell without errors.

You might be interested to know

Interwaving or Interweaving?

Laurateship or Laureateship?

Lanness or Leanness?