Seisickness or Seasickness: How To spell?

The word Seisickness is misspelled against Seasickness, a noun meaning "The peculiar sickness, characterized by nausea and prostration, which is caused by the pitching or rolling of a vessel."

Seasickness has vowels 'ea' together mispronounced as 'ei'
Word contains consecutive vowels 'EA' in between alphabets s & sickness is misspelled as 'EI'
Wrong Spelling:  s-ei-sickness 
Correct Spelling:  s-ea-sickness 
Find more wrongly spelled words of Seasickness to spell it well.

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