Tranquilizer or Tranquillizer: How To spell?

The word Tranquilizer is misspelled against Tranquillizer, a noun meaning "One who, or that which, tranquilizes."

Tranquillizer has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings tranqui & izer which should not be misspelled with single 'L'
Wrong Spelling:  tranqui-l-izer 
Correct Spelling:  tranqui-ll-izer 
Check more misspelled words of Tranquillizer to spell it correct.