Drilmaster or Drillmaster: How To spell?

The word Drilmaster is misspelled against Drillmaster, a noun meaning "One who teaches drill, especially in the way of gymnastics."

Drillmaster has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings dri & master which should not be misspelled with single 'L'
Wrong Spelling:  dri-l-master 
Correct Spelling:  dri-ll-master 
Find more wrongly spelled words of Drillmaster to spell it well.