Syntheticaly or Synthetically: How To spell?

The word Syntheticaly is misspelled against Synthetically, an adverb meaning "In a synthetic manner."

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