Enthec or Entheic: How To spell?

The word Enthec is misspelled against Entheic, an adjective meaning "Caused by a morbifie virus implanted in the system; as, an enthetic disease like syphilis."

Word contains consecutive vowels 'EI' in between alphabets enth & c is misspelled as 'E' as letter 'I' is phonetically ignored
Wrong Spelling:  enth-e-c 
Correct Spelling:  enth-ei-c 
Explore spell check of Entheic to spell without errors.